A university surveyed recent graduates of the English Department for their starting salaries. Four hundred graduates returned the survey. The average salary was $25,000, with a standard deviation of $2,500. What is the best point estimate of the population mean?
A) $25,000
B) $2,500
C) $400
D) $62.5

Question

Quizplus · Accepted Answer

The best point estimate of the population mean is the sample mean, which is $25,000 in this case. Choice B is incorrect because that is the standard deviation, not a point estimate of the mean. Choice C is incorrect because it is unclear how that number would relate to the mean. Choice D is incorrect because it is not a valid option for a point estimate of the mean.

A University Surveyed Recent Graduates of the English Department for Their