Following a one-way within-groups analysis of variance that results in a significant F statistic, the researcher should:
A) replicate the research with matched groups.
B) conduct post hoc tests to determine where the significant differences between levels of the independent variable exist.
C) conduct planned comparisons to explore where differences may exist when you are unsure.
D) conduct a power analysis.

Question

Quizplus · Accepted Answer

Post hoc tests are used to determine where the significant differences between levels of the independent variable exist after obtaining a significant F statistic in the within-groups ANOVA. Replicating the research with matched groups or conducting planned comparisons may be appropriate in some situations, but post hoc tests are the most appropriate next step in this scenario. Conducting a power analysis is only useful before data collection to determine the necessary sample size.

Following a One-Way Within-Groups Analysis of Variance That Results in a Significant