A researcher finds that the mean income for her sample is $40,500 but the mean for the population from which the sample is drawn is believed to be $44,270. The difference between the two means can be attributed to ______.
A) nonrandom sampling
B) normal sampling
C) luck
D) sampling error

Question

Quizplus · Accepted Answer

The difference between the sample mean and population mean can be attributed to sampling error, which is the natural variation that occurs between samples and the population.

A Researcher Finds That the Mean Income for Her Sample