Question 1

The confidence level is the probability that a confidence interval will include the population parameter.

Accepted Answer

A) True 
 B)False

Question 2

Specify the level of confidence is the first step in the confidence interval approach to determining sample size.

Accepted Answer

A) True 
 B)False

Question 3

The is called the standard error of the mean or the proportion to indicate that it refers to a sampling distribution of the mean or the proportion, and not to a sample or a population.

Accepted Answer

A)  standard deviation 
B)  standardized variate 
C)  coefficient of variation 
D)  variance

Question 4

The sampling distribution is the probability of the values of a sampling statistic computed for each possible sample that could be drawn from the target population under a specified sampling plan.

Accepted Answer

A) True 
 B)False

Question 5

The z value for a point is the number of standard deviations a point is away from the mean.

Accepted Answer

A) True 
 B)False

Question 6

Because low response rates increase the probability of response bias, an attempt should always be made to improve the response rate.

Accepted Answer

A) True 
 B)False

Question 7

Nonresponse rates should always be reported and, whenever possible, the effects of nonresponse should be estimated.

Accepted Answer

A) True 
 B)False

Question 8

When estimating a population parameter by using a sample statistic, the _ is the desired size of the estimating interval. This is the maximum permissible difference between the sample statistic and the population parameter.

Accepted Answer

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

Question 9

The mathematical symbols "aX" and "SX" represent a _ for the population and the sampling distribution respectively.

Accepted Answer

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

Question 10

The statistically determined sample size is the net or .

Accepted Answer

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

Question 11

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 12

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

Question 13

The process of generalizing the sample results to the population results is called statistical inference.

Accepted Answer

A) True 
 B)False

Question 14

Which method of improving response rate involves sending potential respondents a postcard or letter to remind nonrespondents to complete and return the questionnaire?

Accepted Answer

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

Question 15

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 16

When the sample size is 10 percent or more of the population size, the standard error formulas will overestimate the standard deviation of the population mean or proportion. Hence, these should be adjusted by a finite population correction factor.

Accepted Answer

A) True 
 B)False

Question 17

Assuming no measurement error, the reliability of an estimate of a population parameter can be assessed in terms of its standard error.

Accepted Answer

A) True 
 B)False

Question 18

is a method to adjust for nonresponse by assigning the characteristic of interest to the nonrespondents based on the similarity of the variables available for both nonrespondents and respondents.

Accepted Answer

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

Question 19

Which survey method has the highest refusal rate?

Accepted Answer

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

Question 20

High response rates decrease the probability that nonresponse bias is substantial.

Accepted Answer

A) True 
 B)False

Exam 12: Sampling: Final and Initial

The confidence level is the probability that a confidence interval will include the population parameter.

Specify the level of confidence is the first step in the confidence interval approach to determining sample size.

The is called the standard error of the mean or the proportion to indicate that it refers to a sampling distribution of the mean or the proportion, and not to a sample or a population.

The sampling distribution is the probability of the values of a sampling statistic computed for each possible sample that could be drawn from the target population under a specified sampling plan.

The z value for a point is the number of standard deviations a point is away from the mean.

Because low response rates increase the probability of response bias, an attempt should always be made to improve the response rate.

Nonresponse rates should always be reported and, whenever possible, the effects of nonresponse should be estimated.

When estimating a population parameter by using a sample statistic, the _ is the desired size of the estimating interval. This is the maximum permissible difference between the sample statistic and the population parameter.

The mathematical symbols "a_X" and "S_X" represent a _ for the population and the sampling distribution respectively.

The statistically determined sample size is the net or .

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.

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

The process of generalizing the sample results to the population results is called statistical inference.

Which method of improving response rate involves sending potential respondents a postcard or letter to remind nonrespondents to complete and return the questionnaire?

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.

When the sample size is 10 percent or more of the population size, the standard error formulas will overestimate the standard deviation of the population mean or proportion. Hence, these should be adjusted by a finite population correction factor.

Assuming no measurement error, the reliability of an estimate of a population parameter can be assessed in terms of its standard error.

is a method to adjust for nonresponse by assigning the characteristic of interest to the nonrespondents based on the similarity of the variables available for both nonrespondents and respondents.

Which survey method has the highest refusal rate?

High response rates decrease the probability that nonresponse bias is substantial.