Question 1

Which of the following is the best definition of variability?

Accepted Answer

A)  it is the amount of dispersion in a data set containing interval or nominal data 
B)  the difference between scores in the present sample and scores in a previous sample 
C)  the amount of dissimilarity in ordinal data 
D)  amount of dissimilarity (or similarity) in respondents' answers to a particular question 
E)  the amount of responses in one respondent's answers to a particular survey question 
A)  it is the amount of dispersion in a data set containing interval or nominal data 
B)  the difference between scores in the present sample and scores in a previous sample 
C)  the amount of dissimilarity in ordinal data 
D)  amount of dissimilarity (or similarity) in respondents' answers to a particular question 
E)  the amount of responses in one respondent's answers to a particular survey question

Question 2

The only time that the population size is a consideration in sample size determination is in the case of a "small population."

Accepted Answer

A) True 
 B)False

Question 3

Level of confidence in sample size formulae is normally set at:

Accepted Answer

A)  95 percent or 96 percent 
B)  5 percent or 10 percent 
C)  95 percent or 99 percent 
D)  1 percent or 5 percent 
E)  None of the above; level of confidence is determined by the formula. 
A)  95 percent or 96 percent 
B)  5 percent or 10 percent 
C)  95 percent or 99 percent 
D)  1 percent or 5 percent 
E)  None of the above; level of confidence is determined by the formula.

Question 4

Using the confidence interval formula for calculating sample size, the amount of variability believed to be in the population must be estimated.

Accepted Answer

A) True 
 B)False

Question 5

The conventional approach to sample size determination follows some convention or number believed somehow to be the "correct" sample size.

Accepted Answer

A) True 
 B)False

Question 6

When attempting to balance the sample size with the cost of data collection, the textbook illustrated that it is helpful to:

Accepted Answer

A)  use an Excel spreadsheet 
B)  rely on financial leveraging 
C)  use a table that depicts data collection cost and sample error for different sample sizes 
D)  use a table that depicts data collection cost and the costs of computing different sample sizes 
E)  use a table that depicts data collection cost contrasted to the cost of not doing research 
A)  use an Excel spreadsheet 
B)  rely on financial leveraging 
C)  use a table that depicts data collection cost and sample error for different sample sizes 
D)  use a table that depicts data collection cost and the costs of computing different sample sizes 
E)  use a table that depicts data collection cost contrasted to the cost of not doing research

Question 7

If you calculate sample size with an e of 3 percent, and then you decide to change e to 5 percent, the required sample size will go up.

Accepted Answer

A) True 
 B)False

Question 8

A graph of the relationship between accuracy and size of the sample shows that accuracy decreases as sample size increases.

Accepted Answer

A) True 
 B)False

Question 9

In sample size formulas, the symbol "e" stands for:

Accepted Answer

A)  estimated parameter or desired confidence level 
B)  acceptable population equation 
C)  estimated statistic or desired variability 
D)  estimated confidence interval 
E)  acceptable sample error 
A)  estimated parameter or desired confidence level 
B)  acceptable population equation 
C)  estimated statistic or desired variability 
D)  estimated confidence interval 
E)  acceptable sample error

Question 10

Which of the following would be defined as the percentage of respondents that qualify for a survey based on criteria such as age, income, and race.

Accepted Answer

A)  demographic incidence 
B)  geographic incidence 
C)  demographic occurrence 
D)  product incidence 
E)  customer data 
A)  demographic incidence 
B)  geographic incidence 
C)  demographic occurrence 
D)  product incidence 
E)  customer data

Question 11

If we are using the formula for calculating the sample size for estimating a mean, the formula will contain:

Accepted Answer

A)  s 
B)  % 
C)  Z³ 
D)  pq 
E)  None of the above; there is no formula for sample size for estimating a mean. 
A)  s 
B)  % 
C)  Z³ 
D)  pq 
E)  None of the above; there is no formula for sample size for estimating a mean.

Question 12

If we are using the sample size formula to be used when estimating a mean and we are trying to determine e, we are trying to indicate:

Accepted Answer

A)  the allowable error 
B)  the proportion of s to S in the sample 
C)  the range of possible z scores in the population 
D)  the percentage of the respondents who will answer p 
E)  the percentage of the respondents who will answer q 
A)  the allowable error 
B)  the proportion of s to S in the sample 
C)  the range of possible z scores in the population 
D)  the percentage of the respondents who will answer p 
E)  the percentage of the respondents who will answer q

Question 13

If you were to graph sample accuracy and sample size, which of the following generalizations would be most accurate?

Accepted Answer

A)  Accuracy is very low, even with small sample sizes of 50 or below. 
B)  Accuracy constantly increases as sample size increases; a sample of 2,000 is four times more accurate than a sample of 500. 
C)  With increases in sample size, sample accuracy decreases. 
D)  We cannot graph sample size and accuracy because we must also include the level of confidence and the variability within the sample data. 
E)  Accuracy increases rapidly when sample size increases up to about 500 and then levels off. 
A)  Accuracy is very low, even with small sample sizes of 50 or below. 
B)  Accuracy constantly increases as sample size increases; a sample of 2,000 is four times more accurate than a sample of 500. 
C)  With increases in sample size, sample accuracy decreases. 
D)  We cannot graph sample size and accuracy because we must also include the level of confidence and the variability within the sample data. 
E)  Accuracy increases rapidly when sample size increases up to about 500 and then levels off.

Question 14

It is important that marketing researchers try to educate manager/clients on the determinants of sample size as an ethical issue arises when the researcher benefits by using larger samples.

Accepted Answer

A) True 
 B)False

Question 15

The most significant factor in calculating sample size (n)is the size of the population (N). For example, if you calculated that you needed a sample size of 300 in order to have an accurate sample for your hometown, it would take at least 10 times this amount, or about 3,000, in order to have an accurate sample representing the entire United States.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following is true regarding probability samples?

Accepted Answer

A)  They are as perfect as a census and contain no errors caused by competitors. 
B)  They will always contain some inaccuracy (sample error). 
C)  They contain serious mistakes, but can be adjusted by statistical weighting procedures. 
D)  They are particularly susceptible to nonsampling errors. 
E)  When they approach large values, say 1,000, they are equivalent to a census. 
A)  They are as perfect as a census and contain no errors caused by competitors. 
B)  They will always contain some inaccuracy (sample error). 
C)  They contain serious mistakes, but can be adjusted by statistical weighting procedures. 
D)  They are particularly susceptible to nonsampling errors. 
E)  When they approach large values, say 1,000, they are equivalent to a census.

Question 17

The desired accuracy should NOT be considered in order to calculate the proper sample size. This is because accuracy cannot be determined until the data are collected and analyzed.

Accepted Answer

A) True 
 B)False

Question 18

A finite multiplier is an adjustment factor that should be used when the sample size is small, relative to the population size.

Accepted Answer

A) True 
 B)False

Question 19

The sample size is always related to how representative the sample is of the population.

Accepted Answer

A) True 
 B)False

Question 20

The only time the population size is important in the calculation of sample size is:

Accepted Answer

A)  always; all formulas include N, a count of the total population 
B)  when the population is very, very large 
C)  when the population is not normal 
D)  when the level of accuracy needs to be less than plus or minus 5 percent 
E)  when the population is small, relative to the sample size 
A)  always; all formulas include N, a count of the total population 
B)  when the population is very, very large 
C)  when the population is not normal 
D)  when the level of accuracy needs to be less than plus or minus 5 percent 
E)  when the population is small, relative to the sample size

Which of the following is the best definition of variability?

The only time that the population size is a consideration in sample size determination is in the case of a "small population."

Level of confidence in sample size formulae is normally set at:

Using the confidence interval formula for calculating sample size, the amount of variability believed to be in the population must be estimated.

The conventional approach to sample size determination follows some convention or number believed somehow to be the "correct" sample size.

When attempting to balance the sample size with the cost of data collection, the textbook illustrated that it is helpful to:

If you calculate sample size with an e of 3 percent, and then you decide to change e to 5 percent, the required sample size will go up.

A graph of the relationship between accuracy and size of the sample shows that accuracy decreases as sample size increases.

In sample size formulas, the symbol "e" stands for:

Which of the following would be defined as the percentage of respondents that qualify for a survey based on criteria such as age, income, and race.

If we are using the formula for calculating the sample size for estimating a mean, the formula will contain:

If we are using the sample size formula to be used when estimating a mean and we are trying to determine e, we are trying to indicate:

If you were to graph sample accuracy and sample size, which of the following generalizations would be most accurate?

It is important that marketing researchers try to educate manager/clients on the determinants of sample size as an ethical issue arises when the researcher benefits by using larger samples.

Which of the following is true regarding probability samples?

The desired accuracy should NOT be considered in order to calculate the proper sample size. This is because accuracy cannot be determined until the data are collected and analyzed.

A finite multiplier is an adjustment factor that should be used when the sample size is small, relative to the population size.

The sample size is always related to how representative the sample is of the population.

The only time the population size is important in the calculation of sample size is:

Introduction to Marketing Research

The Marketing Research Process

The Marketing Research Industry

Defining the Problem and Determining Research Objectives

Research Design

Using Secondary Data and Online Information Databases

Standardized Information Sources

Observation, Focus Groups, and Other Qualitative Methods

Survey Data-Collection Methods

Measurement in Marketing Research

Designing the Questionnaire

Determining How to Select the Sample

Data Collection in the Field, Nonresponse Error, and Questionnaire Screening

Basic Data Analysis: Descriptive Statistics

Generalizing a Sample's Findings to its Population and Testing Hypotheses About Percents and Means

Testing for Differences Between Two Groups or Among More Than

Determining and Interpreting Associations Among Variables

Regression Analysis in Marketing Research

The Marketing Research Report: Preparation and Presentation

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Exam 13: Determining the Size of a Sample

Which of the following is the best definition of variability?

The only time that the population size is a consideration in sample size determination is in the case of a "small population."

Level of confidence in sample size formulae is normally set at:

Using the confidence interval formula for calculating sample size, the amount of variability believed to be in the population must be estimated.

The conventional approach to sample size determination follows some convention or number believed somehow to be the "correct" sample size.

When attempting to balance the sample size with the cost of data collection, the textbook illustrated that it is helpful to:

If you calculate sample size with an e of 3 percent, and then you decide to change e to 5 percent, the required sample size will go up.

A graph of the relationship between accuracy and size of the sample shows that accuracy decreases as sample size increases.

In sample size formulas, the symbol "e" stands for:

Which of the following would be defined as the percentage of respondents that qualify for a survey based on criteria such as age, income, and race.

If we are using the formula for calculating the sample size for estimating a mean, the formula will contain:

If we are using the sample size formula to be used when estimating a mean and we are trying to determine e, we are trying to indicate:

If you were to graph sample accuracy and sample size, which of the following generalizations would be most accurate?

It is important that marketing researchers try to educate manager/clients on the determinants of sample size as an ethical issue arises when the researcher benefits by using larger samples.

Which of the following is true regarding probability samples?

The desired accuracy should NOT be considered in order to calculate the proper sample size. This is because accuracy cannot be determined until the data are collected and analyzed.

A finite multiplier is an adjustment factor that should be used when the sample size is small, relative to the population size.

The sample size is always related to how representative the sample is of the population.

The only time the population size is important in the calculation of sample size is:

Introduction to Marketing Research

The Marketing Research Process

The Marketing Research Industry

Defining the Problem and Determining Research Objectives

Research Design

Using Secondary Data and Online Information Databases

Standardized Information Sources

Observation, Focus Groups, and Other Qualitative Methods

Survey Data-Collection Methods

Measurement in Marketing Research

Designing the Questionnaire

Determining How to Select the Sample

Data Collection in the Field, Nonresponse Error, and Questionnaire Screening

Basic Data Analysis: Descriptive Statistics

Generalizing a Sample's Findings to its Population and Testing Hypotheses About Percents and Means

Testing for Differences Between Two Groups or Among More Than

Determining and Interpreting Associations Among Variables

Regression Analysis in Marketing Research

The Marketing Research Report: Preparation and Presentation

Filters