When we take a single sample mean as an estimate of the value of a population mean, we have
A) a point estimate.
B) an interval estimate.
C) a population estimate.
D) a parameter.

Question

Quizplus · Accepted Answer

A single sample mean is a single numerical value that serves as an estimate of the population mean. Therefore, it is a point estimate. Option B is incorrect because interval estimates involve a range of values rather than a single value. Option C is incorrect because a population estimate would refer to an estimate of a specific parameter of the population, such as the population variance or the proportion of individuals with a certain characteristic. Option D is incorrect because a parameter refers to a characteristic of the population, not an estimate based on a sample.

When We Take a Single Sample Mean as an Estimate