A group of test subjects is divided into 10 groups; then 3 of the groups are chosen at random. What type of sampling is used?

A. Cluster
B. Convenience
C. Stratified
D. Systematic
E. Simple Random



Answer :

Final answer:

Stratified sampling involves dividing subjects into groups based on certain characteristics and then selecting samples from each group.


Explanation:

Stratified sampling is used when the subjects are divided into distinct groups or strata based on certain characteristics. In this case, the group of test subjects is divided into 10 groups, and then 3 groups are chosen at random, which aligns with the definition of stratified sampling.


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