A watchdog group is investigating how people are treated during the foreclosure process. Surveys were mailed to a random sample of 300 people who had recently been threatened with foreclosure. 75 of the surveys were returned by the postal service because the intended recipients had moved and left no forwarding address. What type of problem has occurred?
A) nonresponse bias
B) selection bias
C) measurement error

Question

Quizplus · Accepted Answer

Nonresponse bias has occurred because a significant portion of the sample (those who moved) did not respond, potentially skewing the results if their experiences differ from those who did respond.

A Watchdog Group Is Investigating How People Are Treated During