Question

2. A sampling frame is used to identify the target population in a statistical study.

True or False

3. A Likert scale

a. yields interval data if scale distances are equal.
b. must have an odd number of scale points.
c. must have a verbal label on each scale point.
d. is rarely used in marketing surveys.

5. Which statement is correct?

a. Judgment sampling is preferred to systematic sampling.
b. Sampling without replacement introduces bias in our estimates of parameters.
c. Cluster sampling is useful when strata characteristics are unknown.
d. Focus groups usually work best without a moderator.

9. Ratio data are distinguished from interval data by the presence of a zero reference point.

True or False

10. An investment firm rates bonds for Aard Co Inc. as "B+," while bonds of Deva Corp. are rated "AA." Which level of measurement would be appropriate for such data?

a. Nominal
b. Ordinal
c. Interval
d. Ratio

Answer 1

2. By definition of sampling frame, it is true.

3. By definition, a likert label must have a verbal scale on each scale point. Hence the correct option is option c.

5. Sampling without replacement involves bias in the estimated of the parameters. Hence the correct option is option b.

9. Ratio data is interval data with a 0 data point. Hence this is true.

10. This is an example of ordinal data as the grades can be ordered. Hence the correct option is option b.

Hopefully this will help you. In case of any query, do comment. If you are satisfied with the answer, give it a like. Thanks.