To calculate Pairwise Differences
main topic     see also 

1    Choose Stat > Nonparametrics > Pairwise Differences.

2    In First variable, enter a column. The column you enter in Second variable will be subtracted from this column.

3    In Second variable, enter a column. This column will be subtracted from the column you entered in First variable.

4    In Store differences in, enter a column name or number to store the differences. For n data values, Minitab stores n (n + 1) / 2 pairwise differences.

5    If you like, use one or more of the dialog box options, then click OK.