Question

Fill in the blank:

a. The df-within for an ANOVA with 6 groups and 10 participants in each group is _____

b. Error variance is ____ -- groups variance?

c. In a 2x2 ANOVA matrix of means, cell means tell us about the interaction and _____ means tell us about the main effects.

d. The two primary statistical assumptions about the dependent variable that should be met when you're conducting an ANOVA are that the populations are _____ and _____

e. Factorial designs include ____ or more independent variables.

Answer 1

Ans:

a. The df-within for an ANOVA with 6 groups and 10 participants in each group is 54

N=6*10=60

k=6

df(within)=N-k=60-6=54

b. Error variance is within groups variance

c. In a 2x2 ANOVA matrix of means, cell means tell us about the interaction and columns means tell us about the main effects.

d. The two primary statistical assumptions about the dependent variable that should be met when you're conducting an ANOVA are that the populations are independent and normally distributed.

e. Factorial designs include two or more independent variables.