Question

a ____ is when a population is divided into groups, and then those groups are randomly sampled.

a. population sample
b. random sample
c. stratified sample
d. systematic sample

Explanation:

Stratified sampling divides a population into subgroups (strata) and then randomly samples from those subgroups. A population sample is the entire set of items or individuals of interest. A random sample is where each element in the population has an equal chance of being selected without dividing into groups first. A systematic sample selects elements at regular intervals from an ordered list.

Answer:

C. stratified sample