A province-wide sample survey is to be made. First, the province is subdivided into counties. Seven counties are selected at random and further sampling is concentrated on these seven counties. What type of sampling is this?
A) Simple random
B) Non proportional
C) Cluster
D) Stratified

Question

Quizplus · Accepted Answer

This is an example of cluster sampling because the population is first divided into seven clusters (counties) and then a further sample is taken from each of these clusters.

A Province-Wide Sample Survey Is to Be Made