Question

in which sampling method is the population divided into groups based on certain characteristics before sampling? a. systematic sampling b. stratified sampling c. cluster sampling d. random sampling

Explanation:

• Systematic sampling selects elements at regular intervals.
• Stratified sampling divides the population into subgroups (strata) based on characteristics before sampling.
• Cluster sampling divides the population into clusters and then samples clusters.
• Random sampling selects elements randomly without prior grouping.

Answer:

B. Stratified sampling