I. Multiple Choice (14 total points: 2 points each) 1. When Ho is true for a one-way ANOVA, variation of the group means is a reflection of a inherent variation. b differential treatment effects. C. non-differential treatment effects. d a combination of (a) and (b). 2. Variability of group means about the grand mean affords an indication of inherent variation variation attributable to treatment effect, when present a combination of (a) and (b) above none of the above