A summary measure that is computed from a population is called:
A) a parameter.
B) a statistic.
C) a sample.
D) All of these choices are correct.

Question

A summary measure that is computed from a population is called: 
A) a parameter.
B) a statistic.
C) a sample.
D) All of these choices are correct.

Quizplus · Accepted Answer

A parameter is a summary measure that is computed from a population, while a statistic is a summary measure that is computed from a sample. So, choice A is the best answer. Choice C is incorrect because a sample is not a summary measure, but rather a portion of the population from which a summary measure can be calculated. Choice D is incorrect because it includes both A and B, which are mutually exclusive.

A Summary Measure That Is Computed from a Population Is