WS ANOVA
6 important questions on WS ANOVA
What are planned contrasts?
Partioning variance into smaller portions
More power than post-hoc tests
What are the 5 rules for planned contrasts?
2. Groups coded with + weight will be compared with - weights
3. The sum of weights for a comparison should be zero
4. If it is not involved in a comparison, code it 0
5. Weights in one chunk of variation should be equal to number of groups in the opposite chunk of variation
When are contrasts independent/orthogonal?
- Higher grades + faster learning
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What is the problem with an ANOVA for repeated measures?
What is the assumption of sphericity?
What do you do if an ANOVA is significant in repeated measures?
The question on the page originate from the summary of the following study material:
- A unique study and practice tool
- Never study anything twice again
- Get the grades you hope for
- 100% sure, 100% understanding
