A university wants to survey students to gather opinions regarding a tuition increase for their online degree programs. Which survey method is most likely to lead to nonresponse bias in the sample?
Answer
A
Station interviewers at high-traffic areas near the student center to administer the survey to students trying to get to class.
B
Email all university students asking them to complete an online survey.
C
Ask all professors to include the completion of a survey as a course assignment.
D
Mail a survey to the home address of all university students asking them to complete and return the survey for a chance to win a sweepstakes prize.