Question

A canteen operator is conducting a satisfaction survey on the canteen’s food, sampling 1,000 customers. The canteen operator selects them by interviewing all who patronized the drink stall, believing that these customers would be of similar profile as those who do not patronize the drink stall. What is the sampling method used?
a. simple random sampling
b. stratified random sampling
c. cluster sampling
d. ordinal sampling

Answer 1

(c)Cluster sampling.

In cluster sampling, the population is divided into clusters and population between clusters is assumed to be homogeneous. Hence, only some of the clusters are chosen for sampling. Within these chosen clusters, random sampling is done.

Here the 2 clusters are patrons and non-patrons of drink stall. They have been assumed to be similar (homogeneous) to each other. Hence, only one (patrons of drink stall) of the clusters is chosen and sampling is done from it.