One-way Independent ANOVA (L9) Flashcards
1
Q
What is MSm?
A
The average variability across the population;
SSm / DFm.
2
Q
What is DFm?
A
Degrees of freedom for MSm; group/categories - 1.
3
Q
What is DFr?
A
Degrees of freedom for MSr; DFgrp1 + DFgrp2….
DFgrp = n - 1.
4
Q
What is MSr?
A
The average residual variability across the population
SSr / DFr.
5
Q
Why do we use MSm and MSr?
A
So we can compare SSr and SSm.
6
Q
What is the F ratio?
A
Experimental effect : background error;
How good the model over / how bad the model is
MSm / MSr
For significant F value; p
