A telemarketer set the company's computerised dialling system to contact every 25th person listed in the local telephone directory.What sampling method was used?
A)Simple random sample.
B)Systematic sample.
C)Stratified sample.
D)Cluster sample.

Question

Quizplus · Accepted Answer

The telemarketer used the systematic sampling method by contacting every 25th person listed in the telephone directory. Systematic sampling involves selecting every kth element from a list, and in this case, the k value is 25. This method is a type of non-random sampling, but it can still produce a representative sample if the list is randomly ordered and there are no patterns in the data that correspond with the sampling interval.

A Telemarketer Set the Company's Computerised Dialling System to Contact