Question

what is the main goal of designing a sampling plan?
a. to ensure the sample is large enough
b. to make data collection easier
c. to obtain a sample that accurately represents the population
d. to use all types of sampling methods in one study

Explanation:

A sampling plan's main goal is to get a sample that truly represents the population. While a large sample (a) can help, it's not the core goal. Making data collection easier (b) is a by - product. Using all sampling methods (d) is not practical or the main aim. Representing the population (c) is fundamental as it allows inferences about the whole population from the sample.

Answer:

C. To obtain a sample that accurately represents the population