Study A involves two samples from the same population that are surveyed at two different times.Study B involved collecting data from the same sample over two time periods.Study A is astudy and Study B is a study.

Question

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Study A is a trend study because it examines changes within a population over time by comparing different samples at two points in time. Study B is a panel study because it involves collecting data from the same sample at different times, allowing for the observation of changes within the same group.

Study a Involves Two Samples from the Same Population That