ANOVA - Between Groups

Question 1

When is it used

Answer 1

When the IV has 3 or more levels/conditions and there’s 1 DV

Question 2

Parametric assumptions of one way between groups ANOVA

Answer 2

Categorical IV
Continuous DV
Normal distribution
Homogeneity of variance
What’s the non parametric alternative? Kruskall-Wallis Test

Question 3

Total sum of squares

Answer 3

Overall variance in the experiment

Question 4

Model sum of squares

Answer 4

Variance due to the IV

Question 5

Residual sum of squares

Answer 5

Variance due to noise, things we haven’t measured etc

Question 6

Pairwise comparisons

Answer 6

ANOVA only tells you that one of the groups is significantly different from the others so need to run pairwise comparisons to see which

Question 7

What types of pairwise comparisons

Answer 7

Planned contrasts / comparisons
Post hoc tests

Question 8

One way between groups ANOVA APA format

Answer 8

F (degrees of freedom between, within) = value of F , p
Post hoc comparisons using Turkeys HSD test … (M = , SD = )