The test scores for selected samples of sociology students who took the course from three different instructors are shown below.
Instructor A
Instructor B
Instructor C
83
90
85
60
55
90
80
84
90
85
91
95
71
85
80
?
At ? = .05, test to see if there is a significant difference among the averages of the three groups. Use both the critical value and p-value approaches.
What will be an ideal response?
| ANOVA | ||||||
| Source of Variation | SS | df | MS | F | p-value | F critical |
| Between Groups | 374.8 | 2 | 187.4 | 1.56 | 0.2493 | 3.89 |
| Within Groups | 1438.8 | 12 | 119.9 | |||
| Total | 1813.6 | 14 |
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