General Linear Model and ANOVA Flashcards
1
Q
Why/how does the GLM work?
A
- Because it assumes that residuals will be normally distributed
- And that different statistical tests combine linearly (they add together in a simple way).
2
Q
The purpose of GLM statistical tests is to assess the…
A
- Strengths & directions of relationships & differences
- Strengths of interventions & manipulations
3
Q
ANOVAs are for categorical differences between…
A
- different conditions in a study (intervention 1 vs. intervention 2; drug vs placebo)
- different groups in a study (intervention vs. control; old vs young; patients vs. healthy)
4
Q
What are the different types of ANOVA?
A
- One-way ANOVA
- Factorial/Multi-way ANOVA
- Repeated measures ANOVA
- Mixed ANOVA
5
Q
What is a one-way ANOVA used for?
A
three or more groups; one outcome variable
6
Q
What is a factorial ANOVA used for?
A
two or more groups; two or more categorical predictor variables; one outcome variable
7
Q
What is a repeated measures ANOVA used for?
A
one group; two or more categorical predictor variables; one outcome variable
8
Q
What is a mixed ANOVA used for?
A
two or more groups; one or more categorical predictor variables; one outcome variable
