Which of the following is a major disadvantage of mail questionnaires?
A) insufficient response rate
B) lack of privacy and anonymity
C) bias in sampling
D) costly postage rates

Question

Quizplus · Accepted Answer

Mail questionnaires often have a low response rate, as many people may not bother to complete and return them. This can be a major disadvantage as it can lead to incomplete or unreliable data. The other options (B, C, and D) may also be disadvantages, but they are not as universally applicable as the issue of response rate.

Which of the Following Is a Major Disadvantage of Mail