A Limitation of Using Grouped Data Is That

Multiple Choice

A limitation of using grouped data is that:

A) the average score may not represent the performance of individual subjects in a group.
B) a curve resulting from plotting averaged data may not reflect the true nature of the psychological phenomenon being studied.
C) grouping scores adds error variance to the data.
D) the average score may not represent the performance of individual subjects in a group, and a curve resulting from plotting averaged data may not reflect the true nature of the psychological phenomenon being studied.