Data were collected in 15 villages on the percentage of women housewives in 2008 and again in 2012.The study was concerned whether this percentage had either increased or decreased.What kind of design was this?
A)A matched-pairs study
B)An observational study
C)A matched-pairs,observational study
D)An experiment using a block design

Question

Quizplus · Accepted Answer

This is a matched-pairs, observational study because the same villages were observed at two different times (2008 and 2012) to see if there was a change in the percentage of women housewives, making each village its own control at the first point in time. It's observational because there was no manipulation of variables; the study simply observed changes over time.

Data Were Collected in 15 Villages on the Percentage of Women