A Researcher Is Concerned That Gender May Affect How Subjects

A researcher is concerned that gender may affect how subjects respond to an experimental stimulus. So subjects are paired with another subject who has the same gender, and one member from each pair is assigned by a flip of a coin to the experimental group and one to the control group. This method of assigning subjects to groups is called:

A) Matching
B) Quotas
C) Stratified randomization
D) Random assignment
E) Nonprobability sampling

Correct Answer:

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