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Stratified sampling is a probability sampling technique where a researcher begins by identifying subgroups and then randomly samples from each subgroup.

A) True
B) False

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Random assignment can be used to minimize threats to internal validity.

A) True
B) False

Correct Answer

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The four types of probability sampling procedures include: simple, stratified, cluster, and quota.

A) True
B) False

Correct Answer

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The four types of probability sampling procedures include : simple, stratified, systematic, and cluster.

A) True
B) False

Correct Answer

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