Question 1

The confidence level is the range into which the true population parameter will fall, assuming a given level of confidence.

Accepted Answer

A) True 
 B)False  False

Question 2

If statistical estimation of sample size is at all attempted, it should be realized that the estimates of the population variance don't vary from country to country.

Accepted Answer

A) True 
 B)False  False

Question 3

________ is a statistical procedure that attempts to account for nonresponse by assigning differential weights to the data depending on the response rates.

Accepted Answer

A)  Weighting
B)  Trend analysis
C)  Subjective estimates
D)  Imputation A

Question 4

When conducting marketing research in foreign countries, statistical estimation of sample size may be difficult as estimates of the population mean may be unavailable.

Accepted Answer

A) True 
 B)False

Question 5

The rate of occurrence of persons eligible to participate in the study expressed as a percentage is the ________.

Accepted Answer

A)  incidence rate
B)  initial sample size
C)  completion rate
D)  final sample size

Question 6

The equation for a 95% confidence interval is: ________.

Accepted Answer

A)     1.65  
B)     1.65 
C)     1.96 
D)  A, B, C are incorrect

Question 7

Ethical dilemmas associated with sample size determination include all of the following except ________.

Accepted Answer

A)  inflating the standard deviation to increase sample size and project revenue
B)  what should be done when a difference in the actual standard deviation and the estimated standard deviation results in a larger confidence interval than desired
C)  investigating the possibility of non-response bias and making a reasonable effort to adjust for it
D)  All of the above pose ethical dilemmas.

Question 8

Which method of improving response rate involves sending potential respondents a letter notifying them of the imminent mail, telephone, personal, or Internet survey?

Accepted Answer

A)  motivating the respondents
B)  follow-up
C)  incentives
D)  prior notification

Question 9

Which statement is not true about nonresponse issues in sampling?

Accepted Answer

A)  Nonresponse error is one of the most significant problems in survey research.
B)  Response rates themselves do not indicate whether the respondents are representative of the original sample.
C)  For a given study, if the nonrespondents differ from the respondents on the characteristics of interests, the sample estimates will only be mildly biased.
D)  Increasing the response rate may not reduce nonresponse bias.

Question 10

Prior notification increases response rates for samples of the general public because it reduces surprise and uncertainty and creates a more cooperative atmosphere.

Accepted Answer

A) True 
 B)False

Question 11

Information on differences between respondents and nonrespondents may be obtained from the sample itself, or it may be possible to estimate the differences from other sources.

Accepted Answer

A) True 
 B)False

Question 12

The ________ for a point is the number of standard errors a point is away from the mean.

Accepted Answer

A)  coefficient of variation
B)  z-value
C)  variance
D)  standard deviation

Question 13

The sampling distribution of the mean is a binomial distribution.

Accepted Answer

A) True 
 B)False

Question 14

The mathematical symbols "σX" and "SX" represent a ________ for the population and the sampling distribution respectively.

Accepted Answer

A)  proportion
B)  standard deviation
C)  standard error of the mean
D)  variance

Question 15

Survey System (www.surveysystem.com)and the Discovery Research Group (www.drgutah.com)are Web sites on the Internet that offer free use of sample size and/or confidence interval calculators.

Accepted Answer

A) True 
 B)False

Question 16

If the researcher is required to estimate several parameters, not just one, the calculation of sample size in these cases should be based on a consideration of all the parameters that must be estimated.

Accepted Answer

A) True 
 B)False

Question 17

Which survey method has the highest refusal rate?

Accepted Answer

A)  telephone
B)  mall intercept
C)  mail surveys
D)  Internet

Question 18

Which statement is not true about not-at-homes?

Accepted Answer

A)  People with small children are more likely to be at home than single or divorced people.
B)  Consumers are more likely to be at home on weekdays than on weekends.
C)  Consumers are more likely to be at home in the evening as opposed to during the afternoon.
D)  Pre-notification and appointments increase the likelihood that the respondent will be at home when contact is attempted.

Question 19

A ________ is a summary description of a fixed characteristic or measure of the target population.It denotes the true value that would be obtained if a census rather than a sample was undertaken.

Accepted Answer

A)  statistic
B)  precision level
C)  finite population correction
D)  parameter

Question 20

Discuss what can be done to reduce not-at-homes.

Accepted Answer

The answer of Discuss what can be done to reduce...

Exam 12: Sampling: Final and Initial Sample Size Determination

The confidence level is the range into which the true population parameter will fall, assuming a given level of confidence.

If statistical estimation of sample size is at all attempted, it should be realized that the estimates of the population variance don't vary from country to country.

________ is a statistical procedure that attempts to account for nonresponse by assigning differential weights to the data depending on the response rates.

When conducting marketing research in foreign countries, statistical estimation of sample size may be difficult as estimates of the population mean may be unavailable.

The rate of occurrence of persons eligible to participate in the study expressed as a percentage is the ________.

The equation for a 95% confidence interval is: ________.

Ethical dilemmas associated with sample size determination include all of the following except ________.

Which method of improving response rate involves sending potential respondents a letter notifying them of the imminent mail, telephone, personal, or Internet survey?

Which statement is not true about nonresponse issues in sampling?

Prior notification increases response rates for samples of the general public because it reduces surprise and uncertainty and creates a more cooperative atmosphere.

Information on differences between respondents and nonrespondents may be obtained from the sample itself, or it may be possible to estimate the differences from other sources.

The ________ for a point is the number of standard errors a point is away from the mean.

The sampling distribution of the mean is a binomial distribution.

The mathematical symbols "σ_X" and "S_X" represent a ________ for the population and the sampling distribution respectively.

Survey System (www.surveysystem.com)and the Discovery Research Group (www.drgutah.com)are Web sites on the Internet that offer free use of sample size and/or confidence interval calculators.

If the researcher is required to estimate several parameters, not just one, the calculation of sample size in these cases should be based on a consideration of all the parameters that must be estimated.

Which survey method has the highest refusal rate?

Which statement is not true about not-at-homes?

A ________ is a summary description of a fixed characteristic or measure of the target population.It denotes the true value that would be obtained if a census rather than a sample was undertaken.

Discuss what can be done to reduce not-at-homes.