Pairwise Differences
overview     how to     example     data     see also 

Stat > Nonparametrics > Pairwise Differences

Pairwise Differences calculates and stores the differences between all possible pairs of values formed from two columns. These differences are useful for nonparametric tests and confidence intervals. For example, the point estimate given by Mann-Whitney can be computed as the median of the differences.

Dialog box items

First variable: Select the first column. The column you select in Second variable will be subtracted from this column.

Second variable: Select the second column. This column will be subtracted from the column you selected in First Variable.

Store differences in: Specify the storage column for the differences. For n data values, Minitab stores n (n + 1) / 2 pairwise differences.

Store indices in: Check to store the indices for each difference, then specify two columns which will contain the indices. The difference, (xi - yj), has indices i and j. The value of i is put in the first column and the value of j is put in the second storage column.