Mixed Anova

Question 1

when do you use a mixed anova

Answer 1

used when have within subject Iv’s and between subject IV’s

Question 2

when do you set up experiments like this

Answer 2

set up experiment like this when think between subjects variable will have different effect in / on different levels of within subjects IV and vice versa

Question 3

Assumptions of a mixed anova

Answer 3

normally distributed data
ratio / interval / ordinal
for the between and within subjects:
mauchleys sphericity test (within)
homogeneity of variance (Levene's between)
equality of covariances matrices

Question 4

what is equality of covariances matrices?

Answer 4

compares variances within the covariance matrices box test - computed.
we want this to be NON significant

Question 5

when is there an issue with the equality of covariances matrices?

Answer 5

only an issue if p .001

Question 6

what would you use to illustrate the data in a mixed anova

Answer 6

plots / line graphs give clear view of data so you see how much within subject variables differ according to between subject variables.

Question 7

what do you do to explore the interaction

Answer 7

separate paired sample t-test conducted for each condition

Question 8

what do you use to illustrate any interaction

Answer 8

clustered bar graphs