Lecture 43- Two-factor ANOVA Flashcards
1
Q
When do you use a two-factor ANOVA?
A
- Multiple levels of two different treatments.
- Continuously distributed outcome.
- Second factor usually controlled by study design
2
Q
In the R output for a two-factor ANOVA what value is the f stat?
A
The residual mean squares
3
Q
If P is significant does that mean all means differ in a significant way from each other?
A
No, just that at least one does
4
Q
What is the advantage of the residual mean square?
A
It involves all the data, not just data in individual samples
