Why Does a Researcher Perform a Post Hoc Analysis Comparing

Why does a researcher perform a post hoc analysis comparing characteristics in experimental group and control group?

A) To eliminate the effect of confounding variables
B) To measure the effect of testing on subsequent scores
C) To determine whether the characteristics were similar in both groups
D) To measure the effect of an extraneous variable by statistical analysis
E) To make a logical argument that the characteristics that are similar between groups did not affect the value of the dependent variable

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