To obtain data in a survey, a mailed questionnaire has been used.Would you advise the researcher to follow up some of those in the sample who failed to respond to the questionnaire?
A) Yes, a large sample will avoid bias.
B) Yes, the respondents may differ from non-respondents.
C) No, delayed returns would be of doubtful value.
D) No, a certain loss of respondents is expected.

Question

Quizplus · Accepted Answer

Following up with some of those in the sample who failed to respond to the questionnaire is recommended because respondents may differ from non-respondents, which could introduce bias into the results.

To Obtain Data in a Survey, a Mailed Questionnaire Has