Nielsen tracking studies are ________ that monitor a variable such as sales or market share over time.
A)cross-sectional studies
B)prevalence studies
C)longitudinal studies
D)transversal studies

Question

Quizplus · Accepted Answer

Longitudinal studies are designed to observe changes in variables over an extended period. Nielsen tracking studies monitor variables like sales or market share over time, making it a longitudinal study.

Nielsen Tracking Studies Are ________ That Monitor a Variable Such