Upgrading from:

Statistics`ANOVA`

All functionality is available in the newly created Analysis of Variance Package.

Load ANOVA` to use the Analysis of Variance Package functionality:

Version 5.2 << Statistics`ANOVA`;
ANOVA[{{1, 2}, {1, 3}, {1, 6}, {2, 2}, {2, 5}, {2, 8}}]