Homework 19

1. Compare
and contrast an ANOVA and a regression analysis. Remember to discuss how they are related and
the strengths and weaknesses of each.

2. Compare
and contrast a t-test and an ANOVA.

3. What
are the assumptions underlying the ANOVA?

4. What
are the 3 sources of variation in a simple ANOVA? What does each tell you?

5. Given
the following information, assuming these means came from the same population,
what is your best estimate of the population variance?

There
are 5 groups all with 50 subjects each.
Below are the means for each of the groups:

Group
1 = 21

Group
2 = 23

Group
3 = 27

Group
4 = 22

Group
5 = 29