Janice wishes to ensure that she has equal numbers of freshmen, sophomores, juniors, and seniors in her sample. She separates the population into subpopulations according to class rank and draws random samples from each subpopulation. Janice has engaged in sampling.

Janice has engaged in stratified random sampling.

Explanation:

Stratified random sample is a research method by which the sample is random, which means is not contoled but is is stratified, which means it is organized according a certain populaton and subpopulation. She choses random sample from each subpopulation.

the act of deciding on matters of the economy. economic decision making is routinely conducted by finance ministers, economic advisors, heads of major central banks and business leaders and can have profound effects on a major economy.

is this from a story?

if so, can you tell which one?

~courtney