Chi-Square Test With More Than 2 Categories

tableau chi square test

I have just enrolled in a Data Science course on Udemy  and I learned good stuff.

In this article, we will do a Chi-square test with more than 2 categories. We will use the A/B test « Country » which has 3 categories which corresponds to 3 countries : German, Spain and France. Select « Gender Actual » tab, make a copy with a right-click and select « Duplicate ».

tableau chi square test

Name the tab « Gender Actual (2) » by « Country Actual ».

tableau chi square test

In « Dimensions », move the variable « Geography » over « Gender » in « Columns » to replace « Gender » with « Geography ».

tableau chi square test

tableau chi square test

Here’s how to do an A/B statistical test when there are 3 categories. We’ll start with the classic method and then I’ll show you another way to do Chi-square test with any number of categories.

Let’s start with the classical method. In this case, there are 3 categories so we can’t use the online tool of the previous article. In the previous article we used an online tool with only 2 categories « Sample1 » and « Sample2 ». That’s why we’re going to use another online tool, click here  .

tableau chi square test

In this online tool, we can enter the values without using the total values. That is, we enter only the number of observations in each category. We simply need to enter the values that are on our A/B test. And I’m going to show you how to turn our A/B test into a table. In this way, it will be easier to enter the values in the online tool without making any mistakes.

Go to the « Show me » tool at the top right.

tableau chi square test

Click on « text tables »

tableau chi square test

tableau chi square test

Click on « Swap Rows ans Columns » button.

tableau chi square test

tableau chi square test

Cool, now you have a table arranged in exactly the same way as the online tool.

In the online tool, we will select 2 rows and 3 columns.

tableau chi square test

As we have 3 categories and 2 possible results, we enter our values exactly as in the table we just created on Tableau.

tableau chi square test

Perfect, our table is ready. You can click on the « Calculate » button.

tableau chi square test

tableau chi square test

As you can see, we observe the same thing as the other online tool. There is our indicator « p » value which is less than 5%. Which means there is a meaning.

tableau chi square test

This statistical significance means that these results are valid for the total number of the bank’s clients and not just for the sample of 10 000 clients. We observe similar differences with A/B test « Country » whose results are based solely on the sample of 10 000 clients. We can conclude that in the total number of the bank’s clients, it’s the clients in Germany who are more likely to leave the bank. This is how we do things cleanly.

You saw, this online tool limited by 5 by 5 tables so you can’t use this tool when you have 6 categories or more. But fortunately it’s possible to do Chi-square test with any number of categories. It’s a special method and for you to understand that, I’ll give you a theoretical explanation.

Here we have 3 countries : German, Spain and France.

tableau chi square test

What we’re trying to compare is the clients number leaving the bank in each of these countries.

tableau chi square test

With our basic A/B test based on a sample of 10 000 clients, we obtained 16% for France, 32% for Germany and 17% for Spain. Now the question is : « Do we observe the same results on the total clients number of the bank ? », it means : « In general, does the country have a significant effect on the clients number leaving bank ? ». Germany has the largest number of clients leaving the bank so the idea is : « Why would we need to compare the 3 countries at the same time ? ».

tableau chi square test

If we do an A/B test statistical test with Germany and France and we get a significant difference in the clients number leaving the bank between these 2 countries, then that would mean that in general, the country has a significant effect on the clients number who bank. Indeed, if we find by comparing Germany and France that the Germans are more likely to leave the bank than the French, we can consider that Spain will not change anything. Germans will always be more likely to leave the bank than the French. Maybe there will be a different relationship between Germany and Spain but there will always be a statistically significant difference between France and Germany with a larger number of clients leaving the bank in Germany than France.

Here is a way to confirm that this logic is true. There is a test and the participants of this test are German, Spanish and French. Imagine that this test was done without looking at what is happening in Spain. Now you get the result and you ask yourself the question : « Would the results changed if you added Spain ? ». The answer is « no » because there is no interdependence between Germany, Spain and France. That is, the decision to leave the bank in France and Germany doesn’t depend on Spain. And therefore, it’s quite correct to separate the categories by putting 1 aside to compare the 2 others. And as now we have 2 categories, we can do a Chi-square test with the online tool that we used in the previous article.

So let’s go back to our worksheet and put a country aside to compare only 2 countries. Select « Country » tab.

tableau chi square test

What we observe is that the difference between Spain and France is very small, so it wouldn’t be interesting to do a Chi-square test between Spain and France. It’s more interesting to do a Chi-square test between Germany and France and to prove that there is a statistically significant difference between these 2 countries. This will be enough to conclude that the country has a statistically significant impact on the clients number who leave the bank.

Selects « Country Actual » tab.

tableau chi square test

We will use the online tool of the previous article, click here  .

We will make a copy of « Country Actual » to have a bar chart with absolute values. Select « Country Actual », right-click and select « Duplicate ».

tableau chi square test

In « Show Me », select « horizontal bars ».

tableau chi square test

tableau chi square test

Removes « SUM (Number of Records )» from « Columns » and removes « Exited » and « Geography » from « Rows ».

tableau chi square test

tableau chi square test

In « Dimensions », move « Geography » in « Columns ».

tableau chi square test

tableau chi square test

In « Measures », move « Number of Records » to « Rows ».

tableau chi square test

tableau chi square test

In « Measures », move « SUM(Number of Records) » in « Label ».

tableau chi square test

tableau chi square test

In « Dimensions », move « Exited » in « Label ».

tableau chi square test

tableau chi square test

In « Dimensions », move « Exited » in « Colors ».

tableau chi square test

tableau chi square test

We also need total absolute values, which means the total number of men and women. There is a very fast way to get that. Right-click on the vertical axis and select « Add Reference Line ».

tableau chi square test

Then in « Value », click on the drop-down on the right and select « Sum » to have the total sum of the observations.

tableau chi square test

And in « Scope », you select « Per Cell » option to specify that you want the total sums for each category, male and female.

tableau chi square test

Now, we have the total sum at the top of the bars. We will modify labels to have the absolute values. In « Label », we will change « Computation » to « Value » and click on the « OK » button.

tableau chi square test

tableau chi square test

tableau chi square test

Here’s how to enter the data :

For « Sample1 » in #success, you enter 810 because there are 810 people who left the bank. For « Sample1 » in #trials, you enter 5014 because there are 5014 people in total.

For « Sample2 » in #success, you enter 814 because there are 814 people who left the bank. For « Sample2 » in #trials, you enter 2509 because there are 2509 people in total.

tableau chi square test

Here is the verdict : « Sample2 is more successful ». « Sample2 » corresponds to German’s clients and #success is :« yes, the client left the bank ». This verdict means that of all the clients from German are more likely to leave the bank than clients from France. And look, there is something important, it’s « p<0.001 ». This means that the « p » is strictly less than 0.001. As you can see, « p » value is very small, which concludes that the tests are statistically significant.

Ooh, there’s another thing I wanted to show you with the tab « age » with the 2 bar charts in parallel.

tableau chi square test

As you can see, there are many categories (more than 5) because each category corresponds to a 5-year ago group with clients of the bank aged from 15 to 90 years old. This is a lot of comparison but it would be a good exercise for you to find what are the 2 categories to compare that shows that there is a significant statistic difference.

I give you a hint, compare slices from 50 to 54 years old or from 35 to 39 years olds. In fact, you should compare all peer categories where you observe difference on this basic A/B test. Do a basic A/B test with absolutes values. Then do a Chi-square test to check if the difference is statistically significant, I mean, if the result is valid for the total number of bank’s clients.

This is a way to statistically validate the insights we see onTableau. You see, it’s not very difficult and it’s effective. Here is a way to find insights on Tableau and validate them.

Subscribe to my newsletter and share this article if you think it can help someone you know. Thank you.

-Steph

Validate Data Mining In Tableau With A Chi-Square Test

validate validation

I have just enrolled in a Data Science course on Udemy  and I learned good stuff.

In this article we will start using statistics. Don’t worry we’ll do something simple, we’ll use the Chi-square test in a basic way. There is a special section to learn how to do statistics at an advanced level.

I’ll explain why we’re going to learn how to use the Chi-square test. The results we have with theses 2 bar charts are good. We see on theses 2 bar charts that age has a significant impact on the rate of client leaving the bank. We also see in which age groups the clients leaves the bank the most and which age groups the clients leave the bank the least. With that we have good insights.

In the A/B test « Gender », we can see that there is a correlation between the male and female sex and the choice to leave the bank. But as I said before, this A/B test is basic. The results of a basic A/B test visually shows us what is probably happenning in reality but we aren’t 100% sure of these results. To validate these results, we need do to use statistical tests like Chi-square test.

Doing a report based on basic A/B test is very risky and you can have completely false insights. I don’t advise you to do it (unless you want to leave your job). It’s for this reason that using Chi-square will help us to have strong insights.

Chi-square will allow us to know if our results are statistically significant. Our results are based on a sample of 10 000 clients and Chi-square test will tell us if these results are due to chance effects or if these results can represent all the client of the bank.

For example in our A/B test « Gender », we observed that in our sample of 10 000 clients, women are more likely to leave the bank compared to men.

tableau data mining science chi square test a/b test

Now, we aren’t sure if the results of this sample represent the behavior of all the bank’s clients.

To use basic Chi-square test, we use an online tool. Click here  .

tableau data mining science chi square test a/b test

On internet, there are plenty of websites to do a Chi-square test but we’ll use this one so that you can understand how it works. To do a Chi-square test, we need to use absolute values and in our A/B test we have percentage.

Let’s go back to Tableau. We’ll create a new tab with a version of A/B test with absolute values. In this way, we keep the A/B test with the percentages. Do a right-click on the « Gender » tab and select « Duplicate ».

tableau data mining science chi square test a/b test

Name the new tab « Gender Actual » to specify that it’s absolute values.

tableau data mining science chi square test a/b test

To have the absolute values, move « Number of Records » in « Measures » to the « Marks » area and put it over top of « SUM(Number of Records ».

tableau data mining science chi square test a/b test

tableau data mining science chi square test a/b test

Move « Number of Records » in « Measures » to « Rows » over « SUM(Number of Records ».

tableau data mining science chi square test a/b test

Cool, we have our absolute values.

tableau data mining science chi square test a/b test

We also need total absolute values, which means the total number of men and women. There is a very fast way to get that. Right-click on the vertical axis and select « Add Reference Line ».

tableau data mining science chi square test a/b test

Then in « Value », click on the drop-down on the right and select « Sum » to have the total sum of the observations.

tableau data mining science chi square test a/b test

And in « Scope », you select « Per Cell » option to specify that you want the total sums for each category, male and female.

tableau data mining science chi square test a/b test

Now, we have the total sum at the top of the bars. We will modify labels to have the absolute values. In « Label », we will change « Computation » to « Value » and click on the « OK » button.

tableau data mining science chi square test a/b test

tableau data mining science chi square test a/b test

Perfect, we have the total amount of observation at the top of each bar : 4543 women and 5457 men. We have what we need to use our online tool.

tableau data mining science chi square test a/b test

OK, I’ll explain how this tool works. « Sample1 » and « Sample2 » correspond to the independent variable « Gender ». You choose in which order you enter the data, « Sample1 » for men or the opposite. In our case, we use « Sample1 » for women and « Sample2 » for men.

« #success » corresponds to the result Y=1, which means in our case « yes, the client left the bank ».

« #trials » is the total number of observations, which means the total number of women in « Sample1 » and the total number of men « Sample2 ».

That’s how you enter the data :

  • For « Sample1 » in #success, you enter 1139 because there are 1139 women who left the bank. For « Sample1 » in #trials, you enter 4543 because there are 4543 women in total.

 

  • For « Sample2 » in #success, you enter 898 because there are 898 men who left the bank. For « Sample2 » in #trials, you enter 5457 because there are 5457 men in total.

tableau data mining science chi square test a/b test

Here is the verdict : « Sample1 is more successful ». « Sample1 » corresponds to women and #success is :« yes, the client left the bank ». This verdict means that of all the bank’s client, women are more likely to leave the bank than men. And look, there is something important, it’s « p<0.001 ». This means that the « p » is strictly less than 0.001.

tableau data mining science chi square test a/b test

« p » is the value that indicates whether an independent variable has a statistically significant effect on a dependent variable. In our case, the independent variable is « Gender » and the dependent variable is « Exited », which is : « yes, the client left the bank ». So « p » is strictly less than 0.001, which means that the independent variable « Gender » has a statistically significant effect on the dependent variable « Exited ». This shows us that out of the total number of bank’s clients, women are more likely to leave the bank than men.

This is how we use Chi-square test with this online tool. This is the same principle on all online tools that you can find on Google or DuckDuckGo . You can repeat these instructions that I gave you with other tools, you will get the same results.

It’s cool with the Chi-square we validated the A/B test and to specify that this A/B test is validated, we’ll color the tab in green.

Right-click on the tab, select « Color » and select « Green ».

tableau data mining science chi square test a/b test

tableau data mining science chi square test a/b test

Perfect, now we’ll validate another A/B test. Selects « HasCreditCard » tab.

tableau data mining science chi square test a/b test

We’re going to create an A/B test « HasCreditCard » only with absolute values. To save time, right-click on « Gender Actual » tab and select « Duplicate ».

tableau data mining science chi square test a/b test

We’ll remove the green color on the tab « Gender Actual (2) ». Right-click on the tab and select « Color » and « None ».

tableau data mining science chi square test a/b test

You rename the tab « HasCreditCard Actual ».

tableau data mining science chi square test a/b test

Move the variable « HasCrCard » over « Gender » in « Columns ».

tableau data mining science chi square test a/b test

tableau data mining science chi square test a/b test

Excellent, everything is ready to do a Chi-square test. We’ll remove « Exited » labels to better see the absolutes values. Make a click and drag out.

tableau data mining science chi square test a/b test

tableau data mining science chi square test a/b test

Perfect, let’s go back to our online tool. In this case, « Sample1 » is « no », which means client who don’t have credit card and « Sample2 » for « yes », which means clients who have a credit card.

That’s how you enter the data :

  • For « Sample1 » in #success, you enter 613 because there are 613 clients who left the bank. For « Sample1 » in #trials, you enter 2945 because there are 2945 clients who don’t have a credit card.
  • For « Sample2 » in #success, you enter 1424 because there are 1424 clients who left the bank. For « Sample2 » in #trials, you enter 7055 because there are 7055 clients who have a credit card.

tableau data mining science chi square test a/b test

Let’s look at the verdict, it’s « No significant difference ». « p » value is very high, it’s above 5%. This confirms that the independent variable « HasCrCard » has no statistically significant effect on the dependent variable « Exited ». That was the conclusion we had made when we had done the A/B test with percentages.

We had seen that there was 21% of « Exited » (clients who left the bank) in the category « no » and 20% in the category « yes ». With these results we concluded that most likely the variable « HasCrCard » had no impact on the rate of clients who left the bank. Chi-square test confirms our conclusion and we can put the tab « HasCrCard » in green to say that it’s OK.

Right-click on the tab « HasCreditCard » => « Color » => « Green ».

tableau data mining science chi square test a/b test

tableau data mining science chi square test a/b test

Excellent, now, you can do a statistical A/B test with 2 categories. Soon, we will do statistical A/B tests with more than 2 categories.

Share this article if you think it can help someone you know. Thank you.

-Steph

Add a Reference Line

reference line tableau data science

I have just enrolled in a Data Science course on Udemy  and I learned good stuff.

In the previous article we learned how to work with aliases. We will learn how to add a reference line in our bar chart.

Before I start, I’ll show you a trick in Tableau.

In our bar chart we can see the labels in this order : percentage and below : « Stayed » or « Exited ».

We will reverse this order. You go in this rectangle.

reference line tableau data science

And you place the label « Exited » above the label « SUM(Number of Records ».

reference line tableau data science

Look, the label « Stayed » is above percentage.

reference line tableau data science

With that, we can understand the bar chart more easily.

Let’s add a reference line, let’s go . But before, I think you’d like to know why I’m talking to you about a reference line.

A reference line helps us to compare bar chart results with a benchmark. This benchmark is represented by this reference line.

In our case, the benchmark is the percentage of clients who left the bank in our sample of 10 000 people.

The first thing to do is find this percentage in our bar chart. To be able to do that, remove « Gender » from « Columns ».

reference line tableau data science

Boom, we have a new bar chart.

reference line tableau data science

Look, we only have the percentage of clients who left the bank and the percentage of clients who stayed in the bank.

We see that on our sample of 10 000 people, there are 20% of the clients who left the bank and 80% of the clients stayed in the bank. This means that the churn rate (client departure rate) is 20%.

What we’re going to do is we will add this churn rate in our A/B test. To return to our A/B test, press 2 times on Ctrl+Z or Command+Z or you can click 2 times on the « Back » button in the menu bar.

reference line tableau data science

Now we know that the average clients who left the bank is 20%.

We will add a horizontal line in the Y axis (Y = 20%) to compare the 20% of the churn rate and the 2 categories male and female.

Let’s go. Right-click on the vertical axis (Y axis) and select « Add Reference Line ».

reference line tableau data science

A window appears with several options.

reference line tableau data science

You have the choice to add a line, a band, a distribution or a box plot.

We will use the line for the entire table.

Click on the « Line » button and activate the « Entire Table » checkbox. In « Value » selects « Constant ».

reference line tableau data science

The constant is 20%, so it’s necessary that you put 0.20 in « Value ».

reference line tableau data science

It’s possible to put a label on this reference line. For example, if the line reference corresponds to a formula, the label displays the formula. But for our case, our constant is 20% and it’s already displayed on the vertical axis so we will select « None ».

reference line tableau data science

For the format of the line, select the continuous line and click on the « OK » button.

reference line tableau data science

We have our reference line is added to our chart.

reference line tableau data science

Here is what we can see. Female clients are more likely to leave the bank than average clients. Male clients are less likely to leave the bank than average clients. 

In our case, it’s obvious to see that because there is only 2 categories, men and women.

Now you know how to add a reference line in a bar chart.

Share this article if you think it can help someone you know. Thank you.

-Steph

Stop A Bad Habit

self sabotage

I watched an Olivier Roland’s video  and I learned good stuff.

You know, I had a lot of trouble stopping my worst bad habits. It was bad habits that sabotaged my life. Many people around me have the same difficulty I had because unfortunately nobody showed them a conscious step to stop these bad habits.

Think about it, eating healthier allows you to have better energy, better body weight and live longer. Just eating less pre-prepared meals and replacing that with healthy food allows you to avoid having hundreds of bad calories in your body and this make a huge difference in the long term.

It’s a concept that used in all fields of your life. I think you know the consequences of smoking and not playing sport ?

My old bad habits

Ok, I see you need to see concrete things so I’ll tell you the bad habits I stopped :

bong

  • When I was 15 years old, I started smoking weed (marijuana) and quickly I smoked bong or water pipe several times a day. I stopped smoking when I started to train to have a body like 50 Cent. And after, I realized that I was smoking weed (marijuana) to get away from my daily worries. It was like pressing the « Pause » button several times in a day.

    elric of melnibone michael moorcock

  • For several years, I have only read heroic fantasy’s books (Hawkmoon, Elric of Melnibone, etc) and no personal development’s books. It’s not a bad idea to read heroic fantasy’s books but read only that, it’s just entertainment. When I started reading personal development’s books, I realized that I had lost years of knowledge, references, tools, methods that today would be extremely useful to me. Fortunately, it’s never too late.

    fat food

  • For several years when I was doing Karate or Kung-Fu, I had a bad diet. I only ate pre-prepared meals, pizza, fat foods, sweet drink, candy and I didn’t like vegetables. Today, I have a better diet and I’m proud of the result. Since I have a tool that allows me to have my diet under control, it’s MyFitnessPal  on my smartphone (except for my Saturday’s cheat meal)

I like seeing the reaction of people when I explain to them what I eat at breakfast : rice(or pasta) with meat(of egg) and vegetables. I don’t know why breakfast is very emotionally loaded while this is the easiest meal of the day to change. When you only have healthy food in your fridge and in your closets, you have no choice to have a healthy breakfast.

It may be because of childhood memory that people like to have sweet things at breakfast but our bodies are evolving and we need to feed them differently. A child and an adult don’t eat the same amount of calories to be operational.

Wait here is another bad habit that I stopped. I used to play video games for hours. Sometimes with friends we played more than 8 hours non-stop. Once I invited many girls to my condo to do a « before » with my friends before going to the club. We decided to take the bus (public transport) because we wanted to drink a lot of alcohol.

The problem is that with my friends, we were too focused on the video game and we missed the last bus. The girls had gone crazy and they made us understand that it was the last time we (me and my squad) did this (especially an ex-girlfriend, it was sex versus video games). Since then, I haven’t completely stopped paying video games but I play much less because I don’t buy the new video game console.

I guarantee you that having stopped these bad habits had an incredible impact in my life.

Your future old bad habits

healthy food

Now I have a question for you. What bad habits you want ? What bad habits can you replace with a good habits ?

I advise you to make a list of bad habits you want to stop. When you have chosen the bad habit you want to stop, put in place a simple action to stop it. You can’t stop a bad habit in one night. You need to have a constant simple action to have excellent result.

For example :

  • If you want to eat more vegetables, you can use this grandmothers tactic that is to eat vegetables before dessert.

  • If you want to watch TV only for 1 hour, read a few pages of a personal development’s book.

Leave me a comment with a habit you want to stop and that simple action do you use to stop this ?

Share this article if you think it can help someone you know. Thank you.

-Steph

Dropshipping

dropshipping

I watched an Olivier Roland’s video and I learned good stuff.

To start, a little explanation of dropshipping. Dropshipping is to entrust most of your logistics to an external service provider or to make it simpler, you outsource your logistics. For example, you sell fitness accessories on the internet. Everything concerning the reception of the product, storage of the product, packaging of the product and sending the product to the final customer is managed by the service provider. This is a concept proposed by Tim Ferriss in his book « 4 hours workweek ».

Amazon

amazon fulfillment

The most famous dropshipping provider in the world is Amazon with its service « fulfillment by Amazon »  Here is how it works, you reference your product in Amazon’s catalogue, you order your product from your supplier by telling to your supplier to send the product to an Amazon’s center.

As you see Amazon takes care of the storage of your products. Now when a person buys your product on Amazon, it’s Amazon that handles delivery to the final customer and billing. Of course, Amazon takes a commission that is about 30 % of the sale price. Yes, that’s it, so you have to pay attention to your profit margin.

Today there are more and more people who create dropshipping companies to buy products to import on Alibaba. They do market research on the internet, they do tests and sell these products on Amazon USA, Amazon Canada, Amazon Germany, etc.

it’s possible to earn tens of thousands of dollars per months with an excellent profit margin.

A dropshipping company is interesting because there are fewer constraints than the classic e-business. But there are always risks. You have to buy a little stock (so the stock is at home) to your supplier to see if you can make several sales on Amazon before outsourcing your logistics to Amazon.

Make your first sales

first sales sold

There are several ways to create a dropshipping company, it’s up to you to find the one that fits you. Do your best to minimize risks and a plan B if things don’t go well.

To minimize risks to the maximum, you need to train yourself about dropshipping. Read books about dropshipping, do your own research to try to figure out what products interest people and buy a small stock of products to sell them yourself. The best scenario is that Amazon takes care of everything including find customers. But for this to be possible you have to make marketing efforts to have the first sales. Once you have made the first sales, you have launched the machine.

Once you have made the first sales, an Amazon’s algorithm will help you. Yo know when you see a product on Amazon, at the bottom of the page, you have a « customers who bought this item also bought » zone. When your product is on this list, Amazon helps you find new customers and it’s cool.

Make your own marketing

marketing digital social media

Amazon helps you for your logistics and find new customers and it’s really cool but don’t be naive. If Amazon changes its algorithms, your sales can decrease. To avoid this situation, you have to do your own marketing. An excellent strategy is to create content with a blog, a Youtube channel or another social media.

The idea is to create content to create a community. For example, if you sell fitness accessories, you create content about fitness to create a fitness community. Content allows you to have fans. You build a community and your mission is to help people in your community to reach their goals. And that makes the difference between you and your competitor.

If you’re interested in creating a dropshipping company, the first step you need to do is to train yourself by reading books, watching video on Youtube and participating in online or offline training. Here, now it’s up to you to hustle.

Share this article if you think it can help someone you know. Thank you.

-Steph

Scientific References 

scientific studies

I watched an Olivier Roland’s video  and there is good stuff.

For me, to have to have interesting content for my audience, scientific references are important. It’s imporant because I learn something and you too.

And another reason is I like some much Wikipedia  than I want to do something like this.

My content is based on scientific reference for 2 reasons :

  • In general, scientists do a good job. It doesn’t means that all they do is perfect. Somethimes there are scientific studies that are criticized years later as for planet Pluton. But it’s better than non-scientific studies to see what work and not.

  • It’s a reservoir of unexploited information and knowledge. Especially in the field of internet companies that sell content or information.

Use scientific reference allow you to give more relevent information. Look in personal development industry, a lot of companies don’t use scientific reference and it’s a shame because the day when they discover that they’re wrong, everyone will say they’re liars.

Where

where

You can PubMed , it’ss a great website with a huge number of scientific studies about health.

You can use Google or DuckDuckGo , these search engine can also help you to find it.

When you read books, there are scientific references. Go to see these scientific references and share them with your audience with an article or a video.

Exemple

When I want scientific references about weight loss, I use a search engine and I type : « weight loss scientific study » and I read several scientific studies about it.

In search results, there is often newspaper articles than summarize the scientific study. After you read the newspaper article, it’s cool to read the source when the scientific reference is in the article. In a scientific study, read the abstract (a summary), introduction and conclusion is enough to understand if you don’t have the time.

Share methods or techniques based on scientific studies is better than something based on a wrong belief.

Do you think scientific studies are good to share knowledge ?

-Steph

Blog content (Part 3)

blog content

Asymptote

Attention, if you didn’t read from the beginning, click Part 1 and Part 2.

With this writing and reading cycle, you discover your potential asymptote. When you begin a process of excellence and knowledge because you read all the articles, all the studies about your subject, you build a quality knowledge. You discover within yourself that you are good at something. Because in the world, everyone, without exception, is good at one domain, you just look for it.

Vulnerability

Being vulnerable when we begin to write about a topic. When you go to publish your articles, there will be experts who will read you and ask « But he thinks he’s good ? ». It will always happen here and be vulnerable and willing to be vulnerable, is to accept to have nothing to do with that. Being vulnerable because we’re judged but to continue to be in action. It’s like the Theodore Roosevelt’s speech « Man in the Arena ». Life is like an arena. The majority of people watching gladiators fight and critics but there are very few people in the arena. Create content, this is the same context, it’s a window to the brain and to the heart, it’s stronger.

Not alone

a lot of people

You’re not the only one wanting to build something, to want to express yourself. In the current economic context, there have never been so many people educated in the world. Today, there are more living mathematicians than in the mankind history, therefore to study and have a degree isn’t enough. We must do things by creating content. Write or make videos on a topic you’re passionate is the smallest step towards action and excellence. The action and excellence a little more every day, a little more every day and so on. This isn’t something that is done in 24 hours.

In this world where there are more mathematicians and other scientists, you must become an expert. Everyone becomes an expert in a field. It takes 10,000 hours to become an expert, not everyone agrees with this principle, but it takes time to become an expert. We must begin as soon as possible to become an expert on a topic and it isn’t because you’re an expert on a subject at a time that it will remain your expertise all your life. But continuing this approach to search, explore, decant, produce, create, you’ll pass expertise, in expertise, in expertise. And what to keep in mind is that we live in a world where it’s hard to be successful in any field and you have to be a great expert to succeed.

Write to the outside

It’s good to write for himself for all the reasons I have explained but we also do it for the world. Because when you’re going to start writing, you will communicate with other people. You will meet people online that you would never meet, whether people like you who don’t have much knowledge but are enthusiasts or experts who are available on Twitter with whom you can talk about your blog. This is gold, so this is great start moving into the content creation and content publication, it’s fundamental.

This also allows you to pretend : « Fake it unitl you make it ! ». The idea is to sell to see if it works and then design and produce the stuff. It’s selling something that doesn’t exist to see if people are willing to buy it like that we have no need to produce it and see that it doesn’t work. You need to train yourself to pretend to save time and to pretend playing excellence. Albert Einstein said : « Genius is 1% talent and 99% hard work … ».

Even if you’re competing with yourself (the hardest competition), imagine that there is a person twice as smart as you. If you work twice as that person, you have twice as much chance to succeed that person who is twice as smart as you. When you’ll start to interest about your topic in extreme and passionate way and you’ll enter in a virtuous circle, you’ll start working hard. You’ll be able to get more things before most people.

Your blog could become a startup

There are many companies that began as a blog. There are articles on internet which list it and we see that it all began with a passion. Groupon, the huge site with limited reduction in time, started with a blog.

Self-defense

self-defense

When you gonna write about your passion and get better, you’ll create your headquarters (HQ). In all conversations you’re having, you know that there is a subject where you’re super good. That’s the headquarters, it’s a place where you are well. You can go places where you don’t feel safe but once you’re in your headquarters, it’s you who are in a dominant position. And when we have something like that, that create tremendous confidence in us and it allows us to do many more things.

Luck surface

Post articles outside can increase your « luck surface ». A « luck surface » of 1, for example, is to write a letter in a bottle and throw it into the sea to find a soul mate. This is « luck plan : 1 ». Tinder, « luck surface : 10 000 ». This is the « luck surface », it’s to increase the friction ratio with the world to be able to create the chance. There will haters that say : « Yes, but he was lucky, he had a blog, it’s why he found this job, blah, blah, blah ». But no, it’s not luck, it’s just increase the « luck surface ». Increase the « luck surface » with people who share the same passion.

Asynchronous connection

This also allows to make asynchronous connection with people. When you publish articles in your blog, typically, there is the No. 1 network that will work, people who read the article on the day of its publication. But this article will also be referenced in Google and people will read it, 1 year or 3 years after and they will contact you.

It was the last part of « Content blog », I hope that you’re motivated to put you in action to make your passion your profession.

-Steph