For information about data considerations, examples, and interpretation, go to Overview for Correlogram.
Enter the columns that contain the data. You must enter at least two columns of numeric data. Each column must have the same number of rows.
When you enter multiple By variables, Minitab enables the Show all combinations checkbox. Select this option to create a separate correlogram for each combination of groups created by the By variables. If you do not select this option, Minitab creates a plot for each group of each By variable.
For example, the first By variable has 2 groups, Male and Female, and the second By variable has 2 groups, Employed and Unemployed. If you select Show all combinations, Minitab creates 4 separate plots for the combinations of Male/Employed, Male/Unemployed, Female/Employed, and Female/Unemployed. If you do not select Show all combinations, Minitab creates 4 separate plots for Male, Female, Employed, and Unemployed.
Select the color scale for the rectangles.
Select to display the value of the Pearson correlation coefficient within each rectangle of the graph.