Question 1

It is only when sample size is allowed to vary that it is possible to achieve given levels of both ____________________ and ____________________.

Accepted Answer

precision,

Question 2

If you were to graph precision (H)and sample size (n),which of the following generalizations would be most accurate?

Accepted Answer

A) Precision is very low with small sample sizes of 50 or below. 
B) Precision constantly increases as sample size increases;a sample of 2,000 is four times more precise than a sample of 500. 
C) Precision increases rapidly when sample size increases up to about 500 and then begins to level off. 
D) Precision and sample size have nothing to do with each other,therefore graphing them make no sense 
E) Both b and c are true. 
A) Precision is very low with small sample sizes of 50 or below. 
B) Precision constantly increases as sample size increases;a sample of 2,000 is four times more precise than a sample of 500. 
C) Precision increases rapidly when sample size increases up to about 500 and then begins to level off. 
D) Precision and sample size have nothing to do with each other,therefore graphing them make no sense 
E) Both b and c are true.

Question 3

Precision refers to the degree to which one can feel confident that an estimate approximates the true value.

Accepted Answer

A) True 
 B)False

Question 4

It is only when sample size is allowed to vary that it is possible to achieve given levels of both precision and confidence.

Accepted Answer

A) True 
 B)False

Question 5

Exhibit 16.5 A researcher wished to estimate the proportion of all families who go to the movies at least once a month.He wished the estimate to be accurate within plus or minus 4 percentage points and further desired a 95 percent confidence interval (z = 2)around the result.Additionally,he estimates the population proportion as 0.30.
Refer to Exhibit 16.5.After the households were surveyed,the sample proportion of households using liquid soap was determined to be 0.2.The precision at the 95% confidence level is + or -

Accepted Answer

A) 0.028 percentage points. 
B) 0.032 percentage points. 
C) 0.040 percentage points. 
D) 0.057 percentage points. 
E) 0.141 percentage points. 
A) 0.028 percentage points. 
B) 0.032 percentage points. 
C) 0.040 percentage points. 
D) 0.057 percentage points. 
E) 0.141 percentage points.

Question 6

Which of the following are required to determine the sample size necessary to estimate a population mean?

Accepted Answer

A) Knowledge about or an estimate of the population variance 
B) A statement of the degree of precision desired 
C) A statement of the degree of confidence desired 
D) Both b and c. 
E) a,b,and c. 
A) Knowledge about or an estimate of the population variance 
B) A statement of the degree of precision desired 
C) A statement of the degree of confidence desired 
D) Both b and c. 
E) a,b,and c.

Question 7

If the desired precision to estimate a mean is increased by a factor of four (for example,from 40 to 10)the sample size is increased by a factor of ____,all else equal.

Accepted Answer

A) 30.0 
B) 4.0 
C) 16.0 
D) 2.0 
E) 32.0 
A) 30.0 
B) 4.0 
C) 16.0 
D) 2.0 
E) 32.0

Question 8

These three factors are needed to calculate sample size: ____________________,____________________,and ____________________.

Accepted Answer

variability,precision,confiden

Question 9

The only time the population size (N)is important in the calculation of sample size (n)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 population is small relative to the sample size. 
E) None of the above. 
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 population is small relative to the sample size. 
E) None of the above.

Question 10

In estimating the standard deviation in the population for the formula for calculating the sample size for estimating a mean,we can use some prior knowledge about the

Accepted Answer

A) sample to estimate our standard deviation. 
B) population,undertake a pilot study or estimate the range,and divide by 10. 
C) population,undertake a pilot study or estimate the range,and divide by 6. 
D) Either of the two;b or c would work. 
E) None of the above;if you do not have the actual standard deviation,you cannot use the formula. 
A) sample to estimate our standard deviation. 
B) population,undertake a pilot study or estimate the range,and divide by 10. 
C) population,undertake a pilot study or estimate the range,and divide by 6. 
D) Either of the two;b or c would work. 
E) None of the above;if you do not have the actual standard deviation,you cannot use the formula.

Question 11

Which of the following is NOT an acceptable method of estimating the population standard deviation?

Accepted Answer

A) Perform a pilot study. 
B) Divide the estimated range of variation by 2. 
C) Use an estimate based on past studies of the same phenomenon. 
D) Divide the estimated range of variation by 6. 
E) Use an estimate based on the method used to measure the important variables. 
A) Perform a pilot study. 
B) Divide the estimated range of variation by 2. 
C) Use an estimate based on past studies of the same phenomenon. 
D) Divide the estimated range of variation by 6. 
E) Use an estimate based on the method used to measure the important variables.

Question 12

In the absence of any information concerning the population proportion the conservative researcher should use which of the following estimates when calculating sample size?

Accepted Answer

A) 1.00 
B) 0.20 
C) 0.50 
D) 0.80 
E) 0.00 
A) 1.00 
B) 0.20 
C) 0.50 
D) 0.80 
E) 0.00

Question 13

A soap manufacturer wants to know within +4 percentage points what percentage of households use liquid soaps.To be 95% confident in the estimate,how many households should be sampled? (Note: a confidence interval greater than +4 percentage points is unacceptable. )

Accepted Answer

A) 600 
B) 625 
C) 700 
D) 750 
E) 550 
A) 600 
B) 625 
C) 700 
D) 750 
E) 550

Question 14

Exhibit 16.2 A researcher wishes to estimate the average annual expenditures per household on gasoline.The estimate must be accurate within plus or minus $50 and the estimated standard deviation for such expenditures is $400.
Refer to Exhibit 16.2.For a 95%-confidence interval (use z = 2),the required sample size is

Accepted Answer

A) 250. 
B) 128. 
C) 256. 
D) 640. 
E) Not enough information given. 
A) 250. 
B) 128. 
C) 256. 
D) 640. 
E) Not enough information given.

Question 15

When the sample size will represent more than 5-10% of the population,the calculated sample size should be increased by the finite population correction factor.

Accepted Answer

A) True 
 B)False

Question 16

The finite population correction factor

Accepted Answer

A) is used when the sample size is larger than 5 percent of the population. 
B) reduces the estimate of the standard error. 
C) can be used to decrease the costs of a study. 
D) Both a and b. 
E) a,b,and c. 
A) is used when the sample size is larger than 5 percent of the population. 
B) reduces the estimate of the standard error. 
C) can be used to decrease the costs of a study. 
D) Both a and b. 
E) a,b,and c.

Question 17

Which of the following estimated population proportions would require the largest size sample to estimate it with a specified degree of precision and confidence?

Accepted Answer

A) 0.50 
B) 0.40 
C) 0.10 
D) 0.90 
E) 1.00 
A) 0.50 
B) 0.40 
C) 0.10 
D) 0.90 
E) 1.00

Question 18

The standard error will increase if sample size is increased.

Accepted Answer

A) True 
 B)False

Question 19

Each stage of the research process is interrelated and research teams should consider the entire process before undertaking any data collection.

Accepted Answer

A) True 
 B)False

Question 20

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 (all else being equal)?

Accepted Answer

A) 90% say "Yes" and 10% say "No" 
B) 80% say "Yes" and 20% say "No" 
C) 70% say "Yes" and 30% say "No" 
D) 60% say "Yes" and 40% say "No" 
E) 50% say "Yes" and 50% say "No" 
A) 90% say "Yes" and 10% say "No" 
B) 80% say "Yes" and 20% say "No" 
C) 70% say "Yes" and 30% say "No" 
D) 60% say "Yes" and 40% say "No" 
E) 50% say "Yes" and 50% say "No"

It is only when sample size is allowed to vary that it is possible to achieve given levels of both and .

If you were to graph precision (H)and sample size (n),which of the following generalizations would be most accurate?

Precision refers to the degree to which one can feel confident that an estimate approximates the true value.

It is only when sample size is allowed to vary that it is possible to achieve given levels of both precision and confidence.

Which of the following are required to determine the sample size necessary to estimate a population mean?

If the desired precision to estimate a mean is increased by a factor of four (for example,from 40 to 10)the sample size is increased by a factor of ____,all else equal.

These three factors are needed to calculate sample size: ,,and .

The only time the population size (N)is important in the calculation of sample size (n)is

In estimating the standard deviation in the population for the formula for calculating the sample size for estimating a mean,we can use some prior knowledge about the

Which of the following is NOT an acceptable method of estimating the population standard deviation?

In the absence of any information concerning the population proportion the conservative researcher should use which of the following estimates when calculating sample size?

A soap manufacturer wants to know within +4 percentage points what percentage of households use liquid soaps.To be 95% confident in the estimate,how many households should be sampled? (Note: a confidence interval greater than +4 percentage points is unacceptable. )

When the sample size will represent more than 5-10% of the population,the calculated sample size should be increased by the finite population correction factor.

The finite population correction factor

Which of the following estimated population proportions would require the largest size sample to estimate it with a specified degree of precision and confidence?

The standard error will increase if sample size is increased.

Each stage of the research process is interrelated and research teams should consider the entire process before undertaking any data collection.

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 (all else being equal)?

The Role of Marketing Research

Gathering Marketing Intelligence: The Systems Approach

Gathering Marketing Intelligence: The Project Approach

Problem Formulation

Types of Research Design and Exploratory Research

Descriptive and Causal Research Designs

Secondary Data

Standardized Marketing Information Services

Collecting Primary Data

Collecting Information by Communication

Collecting Information by Observation

Asking Good Questions: Measurement Basics

Measuring Attitudes and Other Variables

Designing the Questionnaire or Observation Form

Developing the Sampling Plan

Collecting the Data: Nonsampling Errors and Response Rate Calculation

Data Analysis: Preliminary Steps

Data Analysis: Analyzing Individual Variables and Basics of Hypothesis Testing

Data Analysis: Analyzing Multiple Variables Simultaneously

The Research Report

Filters

Exam 16: Determining Sample Size

It is only when sample size is allowed to vary that it is possible to achieve given levels of both ____________________ and ____________________.

If you were to graph precision (H)and sample size (n),which of the following generalizations would be most accurate?

Precision refers to the degree to which one can feel confident that an estimate approximates the true value.

It is only when sample size is allowed to vary that it is possible to achieve given levels of both precision and confidence.

Which of the following are required to determine the sample size necessary to estimate a population mean?

If the desired precision to estimate a mean is increased by a factor of four (for example,from 40 to 10)the sample size is increased by a factor of ____,all else equal.

These three factors are needed to calculate sample size: ____________________,____________________,and ____________________.

The only time the population size (N)is important in the calculation of sample size (n)is

In estimating the standard deviation in the population for the formula for calculating the sample size for estimating a mean,we can use some prior knowledge about the

Which of the following is NOT an acceptable method of estimating the population standard deviation?

In the absence of any information concerning the population proportion the conservative researcher should use which of the following estimates when calculating sample size?

A soap manufacturer wants to know within +4 percentage points what percentage of households use liquid soaps.To be 95% confident in the estimate,how many households should be sampled? (Note: a confidence interval greater than +4 percentage points is unacceptable. )

When the sample size will represent more than 5-10% of the population,the calculated sample size should be increased by the finite population correction factor.

The finite population correction factor

Which of the following estimated population proportions would require the largest size sample to estimate it with a specified degree of precision and confidence?

The standard error will increase if sample size is increased.

Each stage of the research process is interrelated and research teams should consider the entire process before undertaking any data collection.

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 (all else being equal)?

The Role of Marketing Research

Gathering Marketing Intelligence: The Systems Approach

Gathering Marketing Intelligence: The Project Approach

Problem Formulation

Types of Research Design and Exploratory Research

Descriptive and Causal Research Designs

Secondary Data

Standardized Marketing Information Services

Collecting Primary Data

Collecting Information by Communication

Collecting Information by Observation

Asking Good Questions: Measurement Basics

Measuring Attitudes and Other Variables

Designing the Questionnaire or Observation Form

Developing the Sampling Plan

Collecting the Data: Nonsampling Errors and Response Rate Calculation

Data Analysis: Preliminary Steps

Data Analysis: Analyzing Individual Variables and Basics of Hypothesis Testing

Data Analysis: Analyzing Multiple Variables Simultaneously

The Research Report

Filters

It is only when sample size is allowed to vary that it is possible to achieve given levels of both and .

These three factors are needed to calculate sample size: ,,and .