Which of the following statements is true?
A) Systematic errors cannot be controlled by the researcher, but can be estimated through statistical testing.
B) A problem may arise with cluster sampling if the characteristics and attitudes of the elements within the cluster are heterogeneous.
C) If the elements of the population are quite similar, only a small sample is needed to accurately portray the characteristic of interest.
D) A census is always more accurate than a sample study.

Question

Quizplus · Accepted Answer

C is true because when the elements of a population are similar, the variability within the population is low. This means that a small sample can accurately reflect the population characteristic of interest, as the chance of picking an unrepresentative sample is reduced.

Which of the Following Statements Is True