[Forward: I asked ChatGPT o1-mini who then wrote this. Hope it helps. All the credit and the blame go to ChatGPT.

I went over the plan and it looked decent. Whether it can be done in 30 days or not, it depends on the person and the time he spends on it.

Francis Anscombe, a British statistician and a professor at Princeton and Yale, constructed 4 different sets of data which all have the same stats, known as Anscombe's quartet. However the quartet's data distributions are quite different. 

Stats alone can be deceiving. Through data visualization, we can gain powerful insights into their differences. 

So, I decided to render Anscombe's quartet in Tableau. All calculations are based on Tableau's native functions. Without this exercise, I may never get chances to use some of the statistical functions in Tableau. Hope that this can inspire more people to use them, such as:

Variance: WINDOW_VAR(SUM(X))
Correlation: WINDOW_CORR(SUM(X), SUM(Y))

The stats summary is generated dynamically and displayed via annotation.

Here is the resulting dashboard, rendered in a single sheet. Feel free to download it.

All the trend lines are also identical after being rounded to two decimals. The trend lines are generated by Tableau based on data. We can see that the R-Squared and P-value are also the same.

Here is the quartet's data:
Anscombe wanted to let people know that stats are not enough to characterize a data set. Visualization is important to help us understand data and get more insights into the data. He wrote a 5-page paper in 1973 to stress on using graphs for statistical analysis.
Hope that this helps us better understand the value of data visualization.


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Just came back from Tableau Conference 2022 at Las Vegas. What an exciting event! The most exciting thing is reuniting with old friends and meeting with the datafam people known online for years.

Attended first time the Tableau Visionary summit.
A little enhancement in the formula editor can make a big difference for whose who create formula all the time in Tableau. Here are my wishes for a future editor. 

Highlighting Syntax Words

Currently a formula in Tableau can look plain and a bit uninspiring.
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