Two methods for teaching Introductory Statistics are to be c

Two methods for teaching Introductory Statistics are to be compared. Ten students are randomly assigned to one of two groups and their midterm averages are recorded. Analyze the data using a two-way ANOVA at 0.05 = .

Group 1 Group 2

Method I 87 60

85 65

96 77

95 72

Method II 85 55

9 73

95 65

75 78

Solution

Two-way ANOVA: response versus rf`, cf

Source DF SS MS F P
rf` 1 650.25 650.250 1.53 0.240
cf 1 420.25 420.250 0.99 0.339
Interaction 1 576.00 576.000 1.36 0.267
Error 12 5096.50 424.708
Total 15 6743.00

S = 20.61 R-Sq = 24.42% R-Sq(adj) = 5.52%