Problem 16
An \(\mathrm{A}(3) \times \mathrm{B}(4)\) factorial design with 6 subjects in each group is analyzed. Give the source and degrees of freedom columns of the analysis of variance summary table.
Problem 18
Define "Three-way interaction"
Problem 20
Plot an interaction for an \(\mathrm{A}(2) \times \mathrm{B}(2)\) design in which the effect of \(\mathrm{B}\) is greater at A1 than it is at A2. The dependent variable is "Number correct." Make sure to label both axes.
Problem 23
Why are within-subjects designs usually more powerful than between-subjects design?
Problem 24
What source of variation is found in an ANOVA summary table for a withinsubjects design that is not in in an ANOVA summary table for a between subjects design. What happens to this source of variation in a between- subjects design?
