Anscombe's Quartet and the Datasaurus

For this activity, the following datasets are needed:

If needed, a free, no obligation, 30-day trial of SigmaXL can be downloaded here. Click here for installation instructions.

Anscombe's quartet - Advanced Multiple Regression Example

Open Anscombe's Quartet Data.xlsx
Click Sheet1. Click (1) SigmaXL > (2) Statistical Tools > (3) Advanced Multiple Regression > (4) Fit Multiple Regression Model:
Click (1) Use Entire Data Table and click (2) Next >>:
Select y1 and click Numeric Response (Y) >>. Select x1 and click Continuous Predictors (X) >>. Click Next >>:
We will leave the Term Generator at its default setting for Main Effects. Click Select All >> and OK >>:
The Multiple Regression Model is generated for response y1 with term x1. Note that in the model summary, R-Square Predicted is 50.14%:
Click sheet MReg1 - Residuals y1. Note the residual charts:
Click Recall SigmaXL Dialog:
Repeat steps 4 and 5 for response y2 with continuous predictor x2:
Response y3 with continuous predictor x3:
And response y4 with continuous predictor x4:

Datasaurus - Scatter Plots Example

Open Datasaurus_data.xlsx
Click (1) SigmaXL > (2) Graphical Tools > (3) Scatter Plots:
Click (1) Use Entire Data Table and click (2) Next >>:
Select y and click Numeric Response (Y) >>. Select x, and click Numeric Predictor (X1) >>. Uncheck Trendline. Click OK >>:
Rawr!

SigmaXL Help Desk