The panel in a longitudinal study
A)is a fixed sample of elements.
B)has periodic additions to replace drop-outs.
C)has members that are measured repeatedly.
D)has periodic additions to maintain representativeness.
E)All of the above are true of the panel in a longitudinal study.

Question

Quizplus · Accepted Answer

All of the options listed are true of panels in longitudinal studies. The panel is a fixed sample of elements and periodically adds replacements for drop-outs to maintain its representativeness. The members of the panel are measured repeatedly over time to track changes and trends.

The Panel in a Longitudinal Study