In: Statistics and Probability
1. Complete the ANOVA summary table and answer the questions that follow.
Source SS df MS F
A 127.44 2
B .222 1
A X B 110.778 2
Within 166.00 12
Total 404.444 17
What are the F critical values for A effect, B effect, and the interaction?
Which effects are significant? Write the results statistically.
B means
A1 |
A2 |
A3 |
|
B1 |
10 |
30 |
40 |
B2 |
40 |
30 |
10 |
A means
B means
A1 |
A2 |
A3 |
|
B1 |
5 |
10 |
15 |
B2 |
5 |
15 |
10 |
A Means
ANOVA table is given below
Source | SS | df | MS | F | P.value |
A | 127.44 | 2 | 63.72 | 4.6063 | 0.0328 |
B | 0.222 | 1 | 0.222 | 0.016 | 0.9014 |
AB | 110.778 | 2 | 55.389 | 4.004 | 0.0465 |
Within | 166 | 12 | 13.83333333 | ||
Total | 404.444 | 17 |
A effect and the interaction are statistically significant at 5% significance level as p.value is less then 0.05.
A1 | A2 | A3 | B. Means | |
B1 | 10 | 30 | 40 | 26.67 |
B2 | 40 | 30 | 10 | 26.67 |
A.Means | 25 | 30 | 25 |
A1 | A2 | A3 | B. Means | |
B1 | 5 | 10 | 15 | 10 |
B2 | 5 | 15 | 10 | 10 |
A.Means | 5 | 12.5 | 12.5 |