A problem with a mail survey compared to other survey methods is:

A problem with a mail survey compared to other survey methods is:
 
  a. low response rate.
  b. biased sample.
  c. high cost.
  d. low response rate and consequently a biased sample.

Question 2

If the ability to have a representative sample for your survey is very important, you should not administer the survey:
 
  a. face to face.
  b. by phone.
  c. by mail.
  d. by computer.

Question 3

How can the response rate of mail questionnaires be improved?
 
  a. Enclose another copy of the questionnaire in follow-up letters.
  b. Include a small payment with the questionnaire.
  c. Include an abridged version of the original questionnaire in follow-up letters.
  d. All of the above.