If a stratified random sample is to be conducted, which of the following is true?
A) The population will be broken down into subgroups called strata.
B) Each subgroup should contain items that are homogeneous with respect to the characteristic of interest.
C) If effective, the total required sample size should be less than that which would be needed if a simple random sample were selected.
D) All of the above.

Question

Quizplus · Accepted Answer

All of the statements are true regarding stratified random sampling. It involves dividing the population into strata (A), ensuring homogeneity within each stratum (B), and often results in needing a smaller total sample size compared to simple random sampling for the same level of precision (C).

If a Stratified Random Sample Is to Be Conducted, Which