A longitudinal study is characterized by each of the following statements EXCEPT:
A) It involves a panel, which is a fixed sample of elements.
B) Elements may be stores, individuals or other entities.
C) The panel remains relatively constant through time.
D) Characteristics of the elements, or sample members, are measured only once.
E) Members may be added to replace dropouts or to keep the panel representative.

Question

Quizplus · Accepted Answer

A longitudinal study involves repeated observations of the same variables over a period of time, meaning characteristics of the elements are measured more than once.

A Longitudinal Study Is Characterized by Each of the Following