The data below are from an independent-measures experiment comparing three different treatment conditions regarding attention scores. Treatment 1 Treatment 2 Treatment 3 0 2 4 0 3 2 G = 36 0 1 4 ΣX2 = 114 3 3 3 0 2 4 0 1 4 –––––––––––––––––––––––––––– T = 3 T = 12 T = 21 SS = 7.5 SS = 4 SS = 3.5 a. Use an analysis of variance with α = .05 to determine whether these data indicate any significant mean differences among the treatment conditions. b. Write the results of the analysis of variance as appropriate for a statistical report.
The data below are from an independent-measures experiment comparing three different treatment conditions regarding attention scores.
Treatment 1 Treatment 2 Treatment 3
0 2 4
0 3 2 G = 36
0 1 4 ΣX2 = 114
3 3 3
0 2 4
0 1 4
––––––––––––––––––––––––––––
T = 3 T = 12 T = 21
SS = 7.5 SS = 4 SS = 3.5
a. Use an analysis of variance with α = .05 to determine whether these data indicate any significant mean differences among the treatment conditions.
b. Write the results of the analysis of variance as appropriate for a statistical report.
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