Question 1

When a researcher wishes to perform a particular type of data analysis that has sample size requirements,he or she may use what type of approach?

Accepted Answer

A) A statistical analysis approach 
B) An arbitrary approach 
C) A variability approach 
D) A conventional approach

Question 2

Researchers can estimate variability in three ways.Which of the following is NOT one of the three ways a researcher may estimate variability?

Accepted Answer

A) By examining research objectives against costs 
B) By assuming maximum variability(p = 50%,q = 50%) 
C) By seeking previous studies on the population 
D) By conducting a small pilot study

Question 3

The accuracy of a sample is a measure of how closely it reports the true values of the population it represents.

Accepted Answer

A) True 
 B)False

Question 4

In almost all cases,the margin of sample error of a random sample is ________ the size of the population.

Accepted Answer

A) independent of 
B) directly proportional to 
C) related to 
D) indirectly related to

Question 5

Marketing researchers often must help decision makers ________ of their requests for high precision,expressed as acceptable sample error.

Accepted Answer

A) understand the economic and cost implications 
B) understand the sample size implications 
C) understand the respondent implications 
D) understand the time constraint implications

Question 6

It is common practice for marketing researchers,particularly the do-it-yourselfers,to consider ________ to be a random sample.

Accepted Answer

A) a mall intercept sample 
B) a panel sample 
C) a telephone sample 
D) a group sample

Question 7

Using a panel company is inexpensive,expedient,and guarantees delivery of the specified number of completed surveys.

Accepted Answer

A) True 
 B)False

Question 8

Define the terms variability,confidence interval,and acceptable margin of sample error.

Accepted Answer

The answer of Define the terms variability,confidence interval,and acceptable margin...

Question 9

How does a researcher determine the amount of acceptable sample error? What is the role of marketing research director in determining the amount of acceptable sample error?

Accepted Answer

The answer of How does a researcher determine the amount...

Question 10

The statement"a sample size decision is usually a compromise between what is theoretically perfect and what is practically feasible"underscores the importance of why a marketing researcher should have a basic understanding of sample size determinations.List and describe the two primary reasons why a marketing researcher should have this basic understanding.

Accepted Answer

The answer of The statement"a sample size decision is usually...

Question 11

If the level of confidence(1.96 for 95 percent)is known,variability estimates,and the size of a sample,there is a formula that allows us to determine:

Accepted Answer

A) Costs of the sample. 
B) Size of the sample. 
C) Representativeness of the sample. 
D) Accuracy(sample error).

Question 12

Because the sampling process is imperfect,it is inappropriate to use an estimate of sampling error in the calculation of this range.

Accepted Answer

A) True 
 B)False

Question 13

A random sample will always have some inaccuracy,which is referred to as margin of sample error or simply sample error.

Accepted Answer

A) True 
 B)False

Question 14

Adopting past sample sizes or taking those used by other companies may not take into consideration that:

Accepted Answer

A) The sample may be proprietary. 
B) The research objectives are not the same. 
C) The sample was flawed. 
D) The research deadline was not the same.

Question 15

A random sample size can be a very tiny percent of the population size and still have a small margin of sample error.

Accepted Answer

A) True 
 B)False

Question 16

The most correct method of determining a sample size is:

Accepted Answer

A) Percentage of population. 
B) All that can be afforded. 
C) All that time will permit. 
D) The confidence interval approach.

Question 17

Thousands of consumers have joined online panels,which are mega-populations that represent consumer markets of many types.

Accepted Answer

A) True 
 B)False

Question 18

A marketing researcher should have a basic understanding of sample size determination because:

Accepted Answer

A) Sample size determines the research outcome. 
B) Sample size affects research efficiencies. 
C) Sample size is often a major cost factor. 
D) Sample size determines the provider of the sample.

Question 19

The most correct method of determining sample size is the confidence interval approach,which applies the concepts of all of the following EXCEPT:

Accepted Answer

A) Accuracy(margin of sample error). 
B) Variability. 
C) Confidence interval to create a"correct"sample size. 
D) Validity and value.

Question 20

When estimating a standard deviation,researchers may rely on prior knowledge of the population(previous study),a pilot study,or:

Accepted Answer

A) Divide the range by 1,000. 
B) Divide the range by a random number. 
C) Divide the range by 8. 
D) Divide the range by 6.

Exam 10: Determining the Size of a Sample

When a researcher wishes to perform a particular type of data analysis that has sample size requirements,he or she may use what type of approach?

Researchers can estimate variability in three ways.Which of the following is NOT one of the three ways a researcher may estimate variability?

The accuracy of a sample is a measure of how closely it reports the true values of the population it represents.

In almost all cases,the margin of sample error of a random sample is ________ the size of the population.

Marketing researchers often must help decision makers ________ of their requests for high precision,expressed as acceptable sample error.

It is common practice for marketing researchers,particularly the do-it-yourselfers,to consider ________ to be a random sample.

Using a panel company is inexpensive,expedient,and guarantees delivery of the specified number of completed surveys.

Define the terms variability,confidence interval,and acceptable margin of sample error.

How does a researcher determine the amount of acceptable sample error? What is the role of marketing research director in determining the amount of acceptable sample error?

If the level of confidence(1.96 for 95 percent) is known,variability estimates,and the size of a sample,there is a formula that allows us to determine:

Because the sampling process is imperfect,it is inappropriate to use an estimate of sampling error in the calculation of this range.

A random sample will always have some inaccuracy,which is referred to as margin of sample error or simply sample error.

Adopting past sample sizes or taking those used by other companies may not take into consideration that:

A random sample size can be a very tiny percent of the population size and still have a small margin of sample error.

The most correct method of determining a sample size is:

Thousands of consumers have joined online panels,which are mega-populations that represent consumer markets of many types.

A marketing researcher should have a basic understanding of sample size determination because:

The most correct method of determining sample size is the confidence interval approach,which applies the concepts of all of the following EXCEPT:

When estimating a standard deviation,researchers may rely on prior knowledge of the population(previous study) ,a pilot study,or: