Question

In: Statistics and Probability

1. Complete the ANOVA summary table and answer the questions that follow. Source             SS                &nb

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.

  1. For each of the following, find the means for the effect of A and the means for the B effect.   Also, graph the possible interaction. You may use EXCEL to graph the interaction.

                                                               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

Solutions

Expert Solution

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


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