Question 1

Sample accuracy refers to:

Accepted Answer

A)  the extent to which the sample is validated 
B)  the extent to which the sample statistics differ from the true population values the statistics represent 
C)  the extent to which the population statistics differs from the representativeness of the sample 
D)  a statistical concept that can be assessed only theoretically 
E)  how close the sample statistics match the predetermined values expected by management 
A)  the extent to which the sample is validated 
B)  the extent to which the sample statistics differ from the true population values the statistics represent 
C)  the extent to which the population statistics differs from the representativeness of the sample 
D)  a statistical concept that can be assessed only theoretically 
E)  how close the sample statistics match the predetermined values expected by management

Question 2

A sample that has been determined by using a cost-basis approach would be when:

Accepted Answer

A)  the manager has discussed the statistical analysis with the research project director 
B)  the manager has discussed the competitor's marketing results with the research project director 
C)  the manager has discussed the previous marketing study with the research project director 
D)  the manager has discussed the budget with the research project director and they have decided to spend "all they can afford" on the project 
E)  none of the above 
A)  the manager has discussed the statistical analysis with the research project director 
B)  the manager has discussed the competitor's marketing results with the research project director 
C)  the manager has discussed the previous marketing study with the research project director 
D)  the manager has discussed the budget with the research project director and they have decided to spend "all they can afford" on the project 
E)  none of the above

Question 3

Using the confidence interval formula for calculating sample size, the level of confidence desired to the estimate of the population values must be determined and is represented in the formula by the z value.

Accepted Answer

A) True 
 B)False

Question 4

Sample size does not have to be "huge" in order to have reasonably accurate data. For example, samples that are 400 or less may provide reasonably accurate information.

Accepted Answer

A) True 
 B)False

Question 5

In determining the level of confidence, any level of confidence is possible, but marketing researchers typically use between 60 percent and 100 percent , depending on the importance of the issue and how much the client has to spend on the research.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following is NOT one of the axioms of sample size and accuracy?

Accepted Answer

A)  The only perfectly accurate sample is a census. 
B)  A probability sample will always have some inaccuracy (sample error). 
C)  Increasing sample size increases the sample's representativeness. 
D)  A probability sample size can be a very tiny percentage of the population size and still be very accurate. 
E)  The size of a probability sample depends on the client's desired accuracy balanced against the cost of data collection. 
A)  The only perfectly accurate sample is a census. 
B)  A probability sample will always have some inaccuracy (sample error). 
C)  Increasing sample size increases the sample's representativeness. 
D)  A probability sample size can be a very tiny percentage of the population size and still be very accurate. 
E)  The size of a probability sample depends on the client's desired accuracy balanced against the cost of data collection.

Question 7

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

Accepted Answer

A)  s 
B)  % 
C)  Z³ 
D)  pq 
E)  N 
A)  s 
B)  % 
C)  Z³ 
D)  pq 
E)  N

Question 8

Consider that we have nominal data (responses are categorical)and the responses are "Yes" or "No" to the question: "The next time you order pizza, will you use Domino's?" Which of the following sets of responses shows the MOST variability?

Accepted Answer

A)  90 percent say "Yes" and 10 percent say "No" 
B)  80 percent say "Yes" and 20 percent say "No" 
C)  70 percent say "Yes" and 30 percent say "No" 
D)  60 percent say "Yes" and 40 percent say "No" 
E)  55 percent say "Yes" and 45 percent say "No" 
A)  90 percent say "Yes" and 10 percent say "No" 
B)  80 percent say "Yes" and 20 percent say "No" 
C)  70 percent say "Yes" and 30 percent say "No" 
D)  60 percent say "Yes" and 40 percent say "No" 
E)  55 percent say "Yes" and 45 percent say "No"

Question 9

One of the reasons why a marketing practitioner should have a basic understanding of sample size determination is because:

Accepted Answer

A)  many practitioners have a false belief that sample size doesn't determine a sample's representativeness 
B)  it helps managers to manage their resources better 
C)  a marketing manager should understand that a sample's representativeness is not related to its accuracy 
D)  the size of the sample is never a major cost factor 
E)  managers always have a "small sample bias"; they believe small samples are more accurate 
A)  many practitioners have a false belief that sample size doesn't determine a sample's representativeness 
B)  it helps managers to manage their resources better 
C)  a marketing manager should understand that a sample's representativeness is not related to its accuracy 
D)  the size of the sample is never a major cost factor 
E)  managers always have a "small sample bias"; they believe small samples are more accurate

Question 10

There is a separate sample size formula for estimating a percentage of the population than for estimating a mean of the population.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following is true regarding a probability sample?

Accepted Answer

A)  The larger the sample size, the more likely the sample is representative. 
B)  The larger the sample size, the more accurate it is (less sample error). 
C)  The more representative the sample, the larger the sample size. 
D)  They only become accurate when they are larger than 1,000. 
E)  The larger the sample size, the more room there is for inaccuracy. 
A)  The larger the sample size, the more likely the sample is representative. 
B)  The larger the sample size, the more accurate it is (less sample error). 
C)  The more representative the sample, the larger the sample size. 
D)  They only become accurate when they are larger than 1,000. 
E)  The larger the sample size, the more room there is for inaccuracy.

Question 12

Sample size has a direct bearing on how accurate the sample's findings are relative to the true values in the population.

Accepted Answer

A) True 
 B)False

Question 13

Sample error may only be determined after data have been collected. Even if we know the level of confidence, an estimate of variability (p*q)and the sample size, n, we cannot compute the amount of sample error we can expect to experience.

Accepted Answer

A) True 
 B)False

Question 14

The confidence interval approach to determining sample size applies the concepts of accuracy, variability, and confidence interval to create a "correct" sample size.

Accepted Answer

A) True 
 B)False

Question 15

The sample size determines:

Accepted Answer

A)  representativeness 
B)  accuracy 
C)  representativeness and accuracy 
D)  the population statistic value 
E)  the mean generated from the sample statistic 
A)  representativeness 
B)  accuracy 
C)  representativeness and accuracy 
D)  the population statistic value 
E)  the mean generated from the sample statistic

Question 16

Unfortunately, many managers falsely believe that:

Accepted Answer

A)  sample size is related to proper data analysis 
B)  sample size is related to the representativeness of the sample 
C)  sample size is determined by computer programs 
D)  sample size is an irrelevant "statistical" technicality issue 
E)  sample size is related to the level of accuracy desired 
A)  sample size is related to proper data analysis 
B)  sample size is related to the representativeness of the sample 
C)  sample size is determined by computer programs 
D)  sample size is an irrelevant "statistical" technicality issue 
E)  sample size is related to the level of accuracy desired

Question 17

With the 99% level of confidence, the corresponding z value is 2.58.

Accepted Answer

A) True 
 B)False

Question 18

The basic concept of the central limit theorem is that all research findings are limited in their application simply because they are based upon a sample and not a census.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following samples have been determined by using the statistical analysis approach?

Accepted Answer

A)  the sample size needed to properly analyze subgroups 
B)  1,000 respondents 
C)  between 1,000 and 1,200 respondents 
D)  200 respondents because each interview is $30 
E)  a former study's sample, which generated favorable statistics 
A)  the sample size needed to properly analyze subgroups 
B)  1,000 respondents 
C)  between 1,000 and 1,200 respondents 
D)  200 respondents because each interview is $30 
E)  a former study's sample, which generated favorable statistics

Question 20

In a study of the U.S. workforce population, a research company interviews 5,000 persons on a street corner in New York. If they decide to increase the sample size to 10,000, they would:

Accepted Answer

A)  increase the sample size and the representativeness of the sample 
B)  increase both sample accuracy and representativeness of the sample 
C)  increase only the representativeness 
D)  decrease the sample accuracy 
E)  increase the sample size, but the sample would still not be representative of the population 
A)  increase the sample size and the representativeness of the sample 
B)  increase both sample accuracy and representativeness of the sample 
C)  increase only the representativeness 
D)  decrease the sample accuracy 
E)  increase the sample size, but the sample would still not be representative of the population

Sample accuracy refers to:

A sample that has been determined by using a cost-basis approach would be when:

Using the confidence interval formula for calculating sample size, the level of confidence desired to the estimate of the population values must be determined and is represented in the formula by the z value.

Sample size does not have to be "huge" in order to have reasonably accurate data. For example, samples that are 400 or less may provide reasonably accurate information.

In determining the level of confidence, any level of confidence is possible, but marketing researchers typically use between 60 percent and 100 percent , depending on the importance of the issue and how much the client has to spend on the research.

Which of the following is NOT one of the axioms of sample size and accuracy?

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

Consider that we have nominal data (responses are categorical)and the responses are "Yes" or "No" to the question: "The next time you order pizza, will you use Domino's?" Which of the following sets of responses shows the MOST variability?

One of the reasons why a marketing practitioner should have a basic understanding of sample size determination is because:

There is a separate sample size formula for estimating a percentage of the population than for estimating a mean of the population.

Which of the following is true regarding a probability sample?

Sample size has a direct bearing on how accurate the sample's findings are relative to the true values in the population.

Sample error may only be determined after data have been collected. Even if we know the level of confidence, an estimate of variability (p*q)and the sample size, n, we cannot compute the amount of sample error we can expect to experience.

The confidence interval approach to determining sample size applies the concepts of accuracy, variability, and confidence interval to create a "correct" sample size.

The sample size determines:

Unfortunately, many managers falsely believe that:

With the 99% level of confidence, the corresponding z value is 2.58.

The basic concept of the central limit theorem is that all research findings are limited in their application simply because they are based upon a sample and not a census.

Which of the following samples have been determined by using the statistical analysis approach?

In a study of the U.S. workforce population, a research company interviews 5,000 persons on a street corner in New York. If they decide to increase the sample size to 10,000, they would:

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

Exam 13: Determining the Size of a Sample

Sample accuracy refers to:

A sample that has been determined by using a cost-basis approach would be when:

Using the confidence interval formula for calculating sample size, the level of confidence desired to the estimate of the population values must be determined and is represented in the formula by the z value.

Sample size does not have to be "huge" in order to have reasonably accurate data. For example, samples that are 400 or less may provide reasonably accurate information.

In determining the level of confidence, any level of confidence is possible, but marketing researchers typically use between 60 percent and 100 percent , depending on the importance of the issue and how much the client has to spend on the research.

Which of the following is NOT one of the axioms of sample size and accuracy?

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

Consider that we have nominal data (responses are categorical)and the responses are "Yes" or "No" to the question: "The next time you order pizza, will you use Domino's?" Which of the following sets of responses shows the MOST variability?

One of the reasons why a marketing practitioner should have a basic understanding of sample size determination is because:

There is a separate sample size formula for estimating a percentage of the population than for estimating a mean of the population.

Which of the following is true regarding a probability sample?

Sample size has a direct bearing on how accurate the sample's findings are relative to the true values in the population.

Sample error may only be determined after data have been collected. Even if we know the level of confidence, an estimate of variability (p*q)and the sample size, n, we cannot compute the amount of sample error we can expect to experience.

The confidence interval approach to determining sample size applies the concepts of accuracy, variability, and confidence interval to create a "correct" sample size.

The sample size determines:

Unfortunately, many managers falsely believe that:

With the 99% level of confidence, the corresponding z value is 2.58.

The basic concept of the central limit theorem is that all research findings are limited in their application simply because they are based upon a sample and not a census.

Which of the following samples have been determined by using the statistical analysis approach?

In a study of the U.S. workforce population, a research company interviews 5,000 persons on a street corner in New York. If they decide to increase the sample size to 10,000, they would:

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