To investigate whether women are more likely than men to prefer Democratic candidates, a political scientist selects a large sample of registered voters, both men and women. She asks every voter whether they voted for the Republican or the Democratic candidate in the last election. This is:
A)an observational study.
B)a multistage sample.
C)a double-blind experiment.
D)a block design.

Question

Quizplus · Accepted Answer

This is an observational study, as the political scientist is only observing and recording the responses of the voters, rather than manipulating any variables or groups.

To Investigate Whether Women Are More Likely Than Men to Prefer