CAPE Applied Mathematics Unit 1 · 2017 · Paper 1 · Question Q5

For a population divided into strata, under which condition is it preferable to use stratified random sampling rather than simple random sampling?

1. (A)Individuals in each strata are alike in many ways.
2. (B)Large numbers of strata contain only a few individuals.
3. (C)Individuals in each strata are very different.
4. (D)Strata are of equal size and each individual is equally likely to be selected.