A Researcher,in Attempting to Sample the Population of Cleveland,decides to Select

Multiple Choice

A researcher,in attempting to sample the population of Cleveland,decides to select 5 households from each block designated for inclusion in the sample.The blocks themselves are to be selected with variable probabilities depending on their size.This is an example of

A) one-stage area sampling.
B) quota sampling.
C) simple two-stage area sampling.
D) probability-proportional-to-size area sampling.
E) systematic sampling.