A crucial feature of planned comparisons is that they are
A)planned before the study is conducted.
B)planned after the study is conducted,but before the analysis of variance is conducted.
C)tests of power,conducted before the study is conducted.
D)only conducted if power is greater than .80.

Question

Quizplus · Accepted Answer

Planned comparisons are planned before conducting the study. This ensures that the researchers have a clear hypothesis or research question that they want to test and allows for a more focused analysis. Planning comparisons after the study is conducted may raise issues of data fishing and selective reporting of results. Therefore, option A is the correct answer.

A Crucial Feature of Planned Comparisons Is That They Are