Respondents may answer more validly on a questionnaire than an interview because

Respondents may answer more validly on a questionnaire than an interview because
 
  a. they have more time to think about an answer.
  b. they believe they have more anonymity.
  c. less personal questions are asked on a questionnaire.
  d. none of these are true.

Ques. 2

If more than 20-25 percent of the questionnaires are not returned after a number of follow-up attempts, the researcher should
 
  a. select another sample and mail them the questionnaire.
  b. interview a small random sample of the non-respondents.
  c. terminate the survey at this point.
  d. weight the results in proportion to the response rate.

Ques. 3

The cover letter for a mailed questionnaire should
 
  a. avoid setting a time limit for return of the questionnaire.
  b. avoid reference to the respondent's status.
  c. emphasize the survey's importance.
  d. explain briefly the expected findings.

Ques. 4

Compared with a longitudinal survey, an important advantage of a cross-sectional survey is
 
  a. the information is collected at several points in time.
  b. the data may be collected more quickly.
  c. the size of the sample needed is smaller.
  d. All of these are true.

Ques. 5

What is wrong with the following Likert-type scale item? The university needs to provide additional computer clusters, and the student technology fee should be increased to provide the necessary funds.
 
  a. Unclear
  c. Uses jargon
  b. Too long
  d. Double-barreled

Ques. 6

If all other factors are held constant, increasing the level of confidence will cause the width of a confidence interval to
 
  a.
  decrease.
  c.
  show no change.
  b.
  increase.

Ques. 7

If all other factors are held constant, increasing the number of subjects in a survey will cause the width of a confidence interval to
 
  a.
  decrease.
  c.
  show no change.
  b.
  increase.

Ques. 8

In a survey, statistical precision in estimating population parameters from sample statistics can be increased by
 
  a. increasing sample size.
  c. limiting the number of subjects surveyed.
  b. increasing variability of data. d.
  using a stricter confidence interval.

Ques. 9

According to the text, ____ percent returns should be a reasonable expectation from a mailed questionnaire.
 
  a. 25-33
  c. 50-70
  b. 34-49
  d. 75-90