Question 1

Which procedure(s) can be used to test the difference between two means when the population variance is unknown?

Accepted Answer

A)  z statistic 
B)  t statistic 
C)  analysis of variance (ANOV
A)  
D)  a and c above 
E)  b and c above 
A)  z statistic 
B)  t statistic 
C)  analysis of variance (ANOV
A)  
D)  a and c above 
E)  b and c above E

Question 2

A grocery store manager decided to investigate whether slower moving items would sell quicker if these items were displayed at the end of the grocery store aisles or with a special florescent shelf tag displaying the price. The manager is interested in these nonprice reduction promotions because the store has only a small markup on these items. The manager decides to use end of aisle displays, shelf markers, and no special markers for four weeks each measuring unit sales at the end of each week. The following sales patterns were observed:
   
(Use the above information to answer the following three questions.)
-How many degrees of freedom does the denominator of the F ratio in the ANOVA table have?

Accepted Answer

A)  2 
B)  11 
C)  9 
D)  6 
E)  none of the above 
A)  2 
B)  11 
C)  9 
D)  6 
E)  none of the above C

Question 3

Which of the following is NOT one of the reasons one would use a factorial experimental design?

Accepted Answer

A)  Factorial experimental designs enable the researcher to control and eliminate variation from other variables affecting the dependent variable. 
B)  A factorial design enables the researcher to study interaction effects. 
C)  Factorial designs save both time and resources. 
D)  Factorial designs have broader applications than simple one factor designs. 
E)  All of the above are reasons for using a factorial experimental design. 
A)  Factorial experimental designs enable the researcher to control and eliminate variation from other variables affecting the dependent variable. 
B)  A factorial design enables the researcher to study interaction effects. 
C)  Factorial designs save both time and resources. 
D)  Factorial designs have broader applications than simple one factor designs. 
E)  All of the above are reasons for using a factorial experimental design. A

Question 4

Use the following situation to answer the next seven questions.
A researcher is interested in studying the effect of geographic location of grocery stores on the prices they charge for various food items. A typical "market basket" is selected and the researcher obtains data on the total basket price from 15 randomly selected stores as shown below. Note that 5 of the stores were inner city stores, 5 suburban stores and 5 campus stores.
  
-The degrees of freedom associated with the within-group sum-of-squares in the above problem is

Accepted Answer

A)  2. 
B)  3. 
C)  12. 
D)  14. 
E)  15. 
A)  2. 
B)  3. 
C)  12. 
D)  14. 
E)  15.

Question 5

In an experiment testing the effectiveness of five different advertisements for a new product in five separate markets, sales of the new product are recorded at the end of each week for eight weeks. Analysis of variance is used to investigate whether the advertisements are equally successful.
-If the sum of squares for the error term in this example is 1,050, what is the calculated F ratio?

Accepted Answer

A)  30 
B)  1.40 
C)  0.70 
D)  1.12 
E)  The F ratio cannot be calculated with the information provided. 
A)  30 
B)  1.40 
C)  0.70 
D)  1.12 
E)  The F ratio cannot be calculated with the information provided.

Question 6

(Use the following information to answer the next six questions.)
A manufacturer is interested in selecting one of three companies to deliver (by truck) its product to its distributors and wholesalers in a certain area. Each of the companies has different operating procedures and uses different routes. Assuming that certain minimum standards for delivery time are achieved, the manufacturer wants to select the company with the lowest unit shipping cost.
In addition, the manufacturer believes that the type of packaging used for the product may have an impact on shipping cost and is considering two types of packaging. It is unknown whether or not any of the three companies under consideration is better equipped to handle either type of packaging.
After using each of the companies for five deliveries of the product with each of the types of packaging (thus, each company made a total of 10 deliveries, with all deliveries under similar circumstances), the shipping costs per unit were calculated and are shown below:
  
-The degrees of freedom associated with the error sum of squares in the above problem is(are)

Accepted Answer

A)  1. 
B)  2. 
C)  29. 
D)  24. 
E)  none of the above. 
A)  1. 
B)  2. 
C)  29. 
D)  24. 
E)  none of the above.

Question 7

(Use the following information to answer the next six questions.)
A manufacturer is interested in selecting one of three companies to deliver (by truck) its product to its distributors and wholesalers in a certain area. Each of the companies has different operating procedures and uses different routes. Assuming that certain minimum standards for delivery time are achieved, the manufacturer wants to select the company with the lowest unit shipping cost.
In addition, the manufacturer believes that the type of packaging used for the product may have an impact on shipping cost and is considering two types of packaging. It is unknown whether or not any of the three companies under consideration is better equipped to handle either type of packaging.
After using each of the companies for five deliveries of the product with each of the types of packaging (thus, each company made a total of 10 deliveries, with all deliveries under similar circumstances), the shipping costs per unit were calculated and are shown below:
  
-Which of the following is the sum of squares for package design in the above problem?

Accepted Answer

A)  0.398 
B)  3.156 
C)  2.786 
D)  0.133 
E)  none of the above 
A)  0.398 
B)  3.156 
C)  2.786 
D)  0.133 
E)  none of the above

Question 8

Which of the following statements pertaining to randomized block designs is false?

Accepted Answer

A)  The design is appropriate when one source of extraneous variation is distorting the results of the experiment. 
B)  The test units within each block are likely to be less alike than units selected completely at random. 
C)  Similar test units are grouped together. 
D)  Treatments are randomly assigned to test units within each block. 
E)  The error mean square in a randomized block design should be smaller than if a completely randomized design was used. 
A)  The design is appropriate when one source of extraneous variation is distorting the results of the experiment. 
B)  The test units within each block are likely to be less alike than units selected completely at random. 
C)  Similar test units are grouped together. 
D)  Treatments are randomly assigned to test units within each block. 
E)  The error mean square in a randomized block design should be smaller than if a completely randomized design was used.

Question 9

When there are two extraneous factors that can cause serious distortion of the results, the preferred experimental design is

Accepted Answer

A)  a factorial design. 
B)  a randomized block design. 
C)  a Latin Square design. 
D)  a covariance analysis. 
E)  a contingency table. 
A)  a factorial design. 
B)  a randomized block design. 
C)  a Latin Square design. 
D)  a covariance analysis. 
E)  a contingency table.

Question 10

When there is one source of extraneous variation distorting the results of an experiment, the preferred experimental design is

Accepted Answer

A)  a contingency table. 
B)  a Latin Square design. 
C)  a factorial design. 
D)  a randomized block design. 
E)  a completely randomized design. 
A)  a contingency table. 
B)  a Latin Square design. 
C)  a factorial design. 
D)  a randomized block design. 
E)  a completely randomized design.

Question 11

Use the following situation to answer the next seven questions.
A researcher is interested in studying the effect of geographic location of grocery stores on the prices they charge for various food items. A typical "market basket" is selected and the researcher obtains data on the total basket price from 15 randomly selected stores as shown below. Note that 5 of the stores were inner city stores, 5 suburban stores and 5 campus stores.
  
-The degrees of freedom associated with the total sum-of-squares in the above problem is

Accepted Answer

A)  2. 
B)  3. 
C)  12. 
D)  14. 
E)  15. 
A)  2. 
B)  3. 
C)  12. 
D)  14. 
E)  15.

Question 12

Which of the following is NOT an assumption of the randomized block design?

Accepted Answer

A)  X is normally distributed in each of the populations. 
B)  The variance of the variable in each population is the same. 
C)  The block and treatment effects are additive. 
D)  A random sample of size one is drawn from each of the kr (k treatments times r blocks) populations. 
E)  The means of the populations are not equal. 
A)  X is normally distributed in each of the populations. 
B)  The variance of the variable in each population is the same. 
C)  The block and treatment effects are additive. 
D)  A random sample of size one is drawn from each of the kr (k treatments times r blocks) populations. 
E)  The means of the populations are not equal.

Question 13

Use the following situation to answer the next seven questions.
A researcher is interested in studying the effect of geographic location of grocery stores on the prices they charge for various food items. A typical "market basket" is selected and the researcher obtains data on the total basket price from 15 randomly selected stores as shown below. Note that 5 of the stores were inner city stores, 5 suburban stores and 5 campus stores.
  
-The between-group sum-of-squares in the above problem is calculated as

Accepted Answer

A)    
B)    
C)    
D)    
E)  none of the above. 
A)    
B)    
C)    
D)    
E)  none of the above.

Question 14

(Use the following information to answer the next six questions.)
A manufacturer is interested in selecting one of three companies to deliver (by truck) its product to its distributors and wholesalers in a certain area. Each of the companies has different operating procedures and uses different routes. Assuming that certain minimum standards for delivery time are achieved, the manufacturer wants to select the company with the lowest unit shipping cost.
In addition, the manufacturer believes that the type of packaging used for the product may have an impact on shipping cost and is considering two types of packaging. It is unknown whether or not any of the three companies under consideration is better equipped to handle either type of packaging.
After using each of the companies for five deliveries of the product with each of the types of packaging (thus, each company made a total of 10 deliveries, with all deliveries under similar circumstances), the shipping costs per unit were calculated and are shown below:
  
-The sum of squares for the interaction term in the above problem can be calculated as

Accepted Answer

A)    
B)  SSPC - SSP - SSC. 
C)  SST - SSTR. 
D)  SSTR - SSP - SSC. 
E)  none of the above. 
A)    
B)  SSPC - SSP - SSC. 
C)  SST - SSTR. 
D)  SSTR - SSP - SSC. 
E)  none of the above.

Question 15

Use the following situation to answer the next seven questions.
A researcher is interested in studying the effect of geographic location of grocery stores on the prices they charge for various food items. A typical "market basket" is selected and the researcher obtains data on the total basket price from 15 randomly selected stores as shown below. Note that 5 of the stores were inner city stores, 5 suburban stores and 5 campus stores.
  
-The total sum-of-squares in the above problem is calculated as

Accepted Answer

A)    
B)    
C)    
D)    
E)  none of the above 
A)    
B)    
C)    
D)    
E)  none of the above

Question 16

In an experiment testing the effectiveness of five different advertisements for a new product in five separate markets, sales of the new product are recorded at the end of each week for eight weeks. Analysis of variance is used to investigate whether the advertisements are equally successful.
-If the sum of squares for the factor "Advertisements" is 168, the mean square for this variable is

Accepted Answer

A)  42. 
B)  21. 
C)  24. 
D)  33.6. 
E)  not able to be calculated. 
A)  42. 
B)  21. 
C)  24. 
D)  33.6. 
E)  not able to be calculated.

Question 17

Use the following situation to answer the next seven questions.
A researcher is interested in studying the effect of geographic location of grocery stores on the prices they charge for various food items. A typical "market basket" is selected and the researcher obtains data on the total basket price from 15 randomly selected stores as shown below. Note that 5 of the stores were inner city stores, 5 suburban stores and 5 campus stores.
  
-The degrees of freedom associated with the between-group sum-of-squares in the above problem is

Accepted Answer

A)  2. 
B)  3. 
C)  12. 
D)  14. 
E)  15. 
A)  2. 
B)  3. 
C)  12. 
D)  14. 
E)  15.

Question 18

Which of the following statements regarding factorial designs is FALSE? A factorial design

Accepted Answer

A)  may be needed to study the interaction of factors. 
B)  may save time and effort since all the observations are employed to study the effects of each of the factors. 
C)  may produce conclusions with broader applications since each factor can be studied with varying combinations of the other factors. 
D)  may be used in conjunction with a randomized block design. 
E)  they are all true. 
A)  may be needed to study the interaction of factors. 
B)  may save time and effort since all the observations are employed to study the effects of each of the factors. 
C)  may produce conclusions with broader applications since each factor can be studied with varying combinations of the other factors. 
D)  may be used in conjunction with a randomized block design. 
E)  they are all true.

Question 19

A grocery store manager decided to investigate whether slower moving items would sell quicker if these items were displayed at the end of the grocery store aisles or with a special florescent shelf tag displaying the price. The manager is interested in these nonprice reduction promotions because the store has only a small markup on these items. The manager decides to use end of aisle displays, shelf markers, and no special markers for four weeks each measuring unit sales at the end of each week. The following sales patterns were observed:
   
(Use the above information to answer the following three questions.)
-What is the within groups (error) sum of squares?

Accepted Answer

A)  86.0 
B)  241.0 
C)  98.0 
D)  327.0 
E)  26.8 
A)  86.0 
B)  241.0 
C)  98.0 
D)  327.0 
E)  26.8

Question 20

In an experiment testing the effectiveness of five different advertisements for a new product in five separate markets, sales of the new product are recorded at the end of each week for eight weeks. Analysis of variance is used to investigate whether the advertisements are equally successful.
-The total number of degrees of freedom for the design is

Accepted Answer

A)  35. 
B)  4. 
C)  7. 
D)  28. 
E)  39. 
A)  35. 
B)  4. 
C)  7. 
D)  28. 
E)  39.

Which procedure(s) can be used to test the difference between two means when the population variance is unknown?

Which of the following is NOT one of the reasons one would use a factorial experimental design?

Which of the following statements pertaining to randomized block designs is false?

When there are two extraneous factors that can cause serious distortion of the results, the preferred experimental design is

When there is one source of extraneous variation distorting the results of an experiment, the preferred experimental design is

Which of the following is NOT an assumption of the randomized block design?

Which of the following statements regarding factorial designs is FALSE? A factorial design

Marketing Research: Its Everywhere

Alternative Approaches to Marketing Intelligence

The Research Process and Problem Formulation

Research Design, Exploratory Research, and Qualitative Data

Descriptive Research

Causal Designs

Data Collection: Secondary Data

Data Collection: Primary Data

Questionnaires and Data Collection Forms

Attitude Measurement

Appendix 10: Psychological Measurement

Sampling Procedures

Sample Size

Collecting the Data: Field Procedures and Nonsampling Error

Data Analysis: Preliminary Steps

Appendix 14: Chi-Square Tests

Data Analysis: Basic Questions

Appendix 15 A: Quick Stats Review

Data Analysis: Examination of Differences

Data Analysis: Investigation of Association

Multivairate Data Analysis: Discriminant Analysis, Factor Analysis, Cluster Analysis, and Multidimensional Scaling

Appendix: More Multivariate Statistical Techniques

The Research Report

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Exam 16: Appendix 16 A: Analysis of Variance

Which procedure(s) can be used to test the difference between two means when the population variance is unknown?

Which of the following is NOT one of the reasons one would use a factorial experimental design?

Which of the following statements pertaining to randomized block designs is false?

When there are two extraneous factors that can cause serious distortion of the results, the preferred experimental design is

When there is one source of extraneous variation distorting the results of an experiment, the preferred experimental design is

Which of the following is NOT an assumption of the randomized block design?

Which of the following statements regarding factorial designs is FALSE? A factorial design

Marketing Research: Its Everywhere

Alternative Approaches to Marketing Intelligence

The Research Process and Problem Formulation

Research Design, Exploratory Research, and Qualitative Data

Descriptive Research

Causal Designs

Data Collection: Secondary Data

Data Collection: Primary Data

Questionnaires and Data Collection Forms

Attitude Measurement

Appendix 10: Psychological Measurement

Sampling Procedures

Sample Size

Collecting the Data: Field Procedures and Nonsampling Error

Data Analysis: Preliminary Steps

Appendix 14: Chi-Square Tests

Data Analysis: Basic Questions

Appendix 15 A: Quick Stats Review

Data Analysis: Examination of Differences

Data Analysis: Investigation of Association

Multivairate Data Analysis: Discriminant Analysis, Factor Analysis, Cluster Analysis, and Multidimensional Scaling

Appendix: More Multivariate Statistical Techniques

The Research Report

Filters