When Identifiable Subgroups (Such as Different Ethnic Groups) Exist in a Sample

Multiple Choice

When identifiable subgroups (such as different ethnic groups) exist in a sample, it can be useful to compute the correlations found in each group because

A) subgroups represent outliers that must be taken into account when interpreting the results of the research.
B) if there are subgroup differences in correlations then the overall correlation will not accurately represent the results of the study.
C) subgroup differences in correlations is one indicator of multicollinearity in the data.
D) a large difference in subgroup correlations is an indicator of restriction in range.