Which design has no comparison group?
A) nonequivalent
B) before-and-after
C) ex post facto
D) experiment

Name: Which design has no comparison group? A) nonequivalent B) before-and-after C) ex post facto D) experiment
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Question

Quizplus · Accepted Answer

Before-and-after designs lack a comparison group because they measure outcomes in the same group of subjects before and after an intervention, without comparing to a separate control group.

Which Design Has No Comparison Group