To calculate Pairwise Averagesmain topic see also
To calculate Pairwise Averages1 Choose Stat > Nonparametrics > Pairwise Averages.
2 In Variable, enter the column for which you want to obtain averages.
3 In Store averages in, enter a column name or number to store the pairwise (Walsh) averages. For n data values, Minitab stores n (n + 1) / 2 pairwise averages.
4 If you like, use one or more of the dialog box options, then click OK.