The data below are from an independent-measures experiment comparing three different treatment conditions.

a.Explain why an ANOVA should be used instead of a series of t tests to evaluate the mean differences among the three treatments.
b.Use an analysis of variance with α = .05 to determine whether these data indicate any significant mean differences among the treatments.
c.Compute η², the percentage of variance accounted for by the treatments.

Question

The data below are from an independent-measures experiment comparing three different treatment conditions.
  
a.Explain why an ANOVA should be used instead of a series of t tests to evaluate the mean differences among the three treatments.
b.Use an analysis of variance with α = .05 to determine whether these data indicate any significant mean differences among the treatments.
c.Compute η², the percentage of variance accounted for by the treatments.

Quizplus · Accepted Answer

The Answer of The data below are from an independent-measures experiment comparing three different treatment conditions.
  
a.Explain why an ANOVA should be used instead of a series of t tests to evaluate the mean differences among the three treatments.
b.Use an analysis of variance with α = .05 to determine whether these data indicate any significant mean differences among the treatments.
c.Compute η², the percentage of variance accounted for by the treatments.

The Data Below Are from an Independent-Measures Experiment Comparing Three