Ebook Problems ANOVA 2Way
Contents
EBook Problems Set - Two-Way ANOVA
Problem 1
In a two-way ANOVA test, what are the typical null hypothesizes?
- Choose all that apply.
- (a) The population means of the first factor are equal.
- (b) The population means of the first and second factor are equal.
- (c) The population means of the second factor are equal.
- (d) There is no interaction between the two factors.
Answer
Problem 2
Suppose that two factors, A and B, is thought to affect the top speed of a car. We will use two-way ANOVA analysis. Are the population means of factor A equal?
| Top Speed | A | B |
| 93.0 | 1 | 1 |
| 136.0 | 1 | 2 |
| 198.0 | 1 | 3 |
| 88.0 | 2 | 1 |
| 148.0 | 2 | 2 |
| 279.0 | 2 | 3 |
- Choose one answer.
- (a) Yes, they are equal.
- (b) No, they are not equal.
Answer
Problem 3
Using the data from the previous problem and two-way ANOVA analysis, are the population means of factor B equal?
- Choose one answer.
- (a) Yes, they are equal.
- (b) No, they are not equal.
Answer
Problem 4
Using the data from the previous problem and two-way ANOVA analysis, is there an interaction effect between the two factors?
- Choose one answer.
- (a) Yes, there is an interaction effect.
- (b) No, there is no interaction effect.
Answer
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