Returns information concerning the groups.
A two-dimensional double array containing information concerning the groups.
Row i contains information pertaining to the i-th group. The information in the columns is as follows:
| Column | Information |
|---|---|
| 0 | Group Number |
| 1 | Number of nonmissing observations |
| 2 | Group Mean |
| 3 | Group Standard Deviation |
ANOVA Class | Imsl.Stat Namespace