In research investigating relationships between variables, it is best if
A) the research sample is homogeneous with respect to major demographic variables.
B) the number of variables is approximately the same as the number of individuals in the sample.
C) the researcher uses the individual as the unit of statistical analysis.
D) the researcher uses the group as the unit of statistical analysis.

Question

Quizplus · Accepted Answer

The research sample should be homogeneous with respect to major demographic variables to ensure that the results are not confounded by differences in these variables.

In Research Investigating Relationships Between Variables, It Is Best If