Menu location: Data_Transforming and Deriving_Pairwise_Differences.
This function creates a column of all possible (n*n) pairwise differences from a pair of columns:
| X | Y |
| 1 | 2 |
| 2 | 3 |
| 3 | 6 |
Differences (X, Y)
-1
-2
-5
0
-1
-4
1
0
-3
All possible (n * n) Xi...(i=1 to k) are compared with Yj...(j=1 to k).
These contrasts form intermediate steps in a number of nonparametric statistical methods.
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