In order to estimate a parameter (such as the mean) of a population you would need which of the following?
A) sample
B) population
C) census
D) cluster
E) pilot test

Question

Quizplus · Accepted Answer

To estimate a parameter of a population, one needs a representative portion of that population, which is a sample. The sample can then be used to make inferences about the larger population. A census (C) is a count of the entire population, which is often not feasible or practical. A population (B) refers to the entire group being studied but does not provide information on the parameter of interest. A cluster (D) is a subgroup within the population and may be used in certain sampling techniques. A pilot test (E) is a smaller version of a study that is conducted prior to the main study to test feasibility, functionality, and to make estimates of the likely sample size needed.

In Order to Estimate a Parameter (Such as the Mean)