Question 1

In a two-way ANOVA with interaction, a significant interaction term indicates that

Accepted Answer

A)  the response variable is interactive. 
B)  a blocking factor is present. 
C)  both factors are unrelated. 
D)  both factors have a combined effect on the response variable. 
A)  the response variable is interactive. 
B)  a blocking factor is present. 
C)  both factors are unrelated. 
D)  both factors have a combined effect on the response variable.

Question 2

A bottle cap manufacturer with four machines and six operators wants to see if variation in production is due to the machines and/or the operators. ANOVA table follows.   What is the mean square for operators?

Accepted Answer

The answer of A bottle cap manufacturer with four machines...

Question 3

What is the null hypothesis for an ANOVA comparing three population means? ____________________

Accepted Answer

The answer of What is the null hypothesis for an...

Question 4

In a two-way ANOVA, the sources of variation are

Accepted Answer

A)  Total variation and error variation. 
B)  Total variation, treatment variation, and error variation. 
C)  Total variation, treatment variation, blocking variation and error variation. 
D)  Treatment variation and blocking variation. 
A)  Total variation and error variation. 
B)  Total variation, treatment variation, and error variation. 
C)  Total variation, treatment variation, blocking variation and error variation. 
D)  Treatment variation and blocking variation.

Question 5

An ANOVA comparing the waiting times for four different emergency rooms shows the following comparison of the four mean waiting times.   Which two pairs of means are significantly different?

Accepted Answer

The mean waiting time for ER1

Question 6

In an one-way ANOVA, how many degrees of freedom are associated with the numerator of the F ratio? _______

Accepted Answer

The answer of In an one-way ANOVA, how many degrees...

Question 7

In a study of protein breakfast bars, five bars from each of three brands were tested to see if the mean amount of protein per bar differs among the brands. If the sum of squares for the brands is 0.07, what is the mean square for brands? ______

Accepted Answer

The answer of In a study of protein breakfast bars,...

Question 8

ANOVA requires that the populations should be ______, ______, and _____.

Accepted Answer

normal or normally d

Question 9

Two accounting professors decided to compare the variance of their grading procedures. To accomplish this, they each graded the same 10 exams with the following results:   What is H0?

Accepted Answer

A)  Option A 
B)  Option B 
C)  Option C 
D)  Option D 
A)  Option A 
B)  Option B 
C)  Option C 
D)  Option D

Question 10

When testing for differences between treatment means, the t statistic is based on:

Accepted Answer

A)  The treatment degrees of freedom. 
B)  The total degrees of freedom. 
C)  The error degrees of freedom. 
D)  The ratio of treatment and error degrees of freedom. 
A)  The treatment degrees of freedom. 
B)  The total degrees of freedom. 
C)  The error degrees of freedom. 
D)  The ratio of treatment and error degrees of freedom.

Question 11

In a two-way ANOVA table with interaction, what are the error degrees of freedom? _________

Accepted Answer

The answer of In a two-way ANOVA table with interaction,...

Question 12

An experiment to determine the most effective way to teach safety principles applied four different teaching methods. Some employees were given programmed instruction booklets and worked through the course at their own pace. Other employees attended lectures. A third group watched a television presentation, and a fourth group was divided into small discussion groups. A high of 10 was possible. A sample of five tests was selected from each group. The test grade results were:   At the 0.01 level, what is the critical value?

Accepted Answer

A)  1.00 
B)  1.96 
C)  3.24 
D)  5.29 
A)  1.00 
B)  1.96 
C)  3.24 
D)  5.29

Question 13

A two-way ANOVA with interaction has how many sources of variation?

Accepted Answer

A)  5. 
B)  4. 
C)  3. 
D)  2. 
A)  5. 
B)  4. 
C)  3. 
D)  2.

Question 14

In an ANOVA table, k represents the total number of sample observations and n represents the total number of treatments.

Accepted Answer

A) True 
 B)False

Question 15

An F statistic is:

Accepted Answer

A)  a ratio of two means. 
B)  a ratio of two variances. 
C)  the difference between three means. 
D)  a population parameter. 
A)  a ratio of two means. 
B)  a ratio of two variances. 
C)  the difference between three means. 
D)  a population parameter.

Question 16

What statistical technique is used to test the equality of three or more population means? ____________________

Accepted Answer

Analysis o

Question 17

A bottle cap manufacturer with four machines and six operators wants to see if variation in production is due to the machines and/or the operators. ANOVA table follows.   What are the degrees of freedom for the operators?

Accepted Answer

The answer of A bottle cap manufacturer with four machines...

Question 18

A bottle cap manufacturer with four machines and six operators wants to see if variation in production is due to the machines and/or the operators. ANOVA table follows.   What are the degrees of freedom for the errors?

Accepted Answer

The answer of A bottle cap manufacturer with four machines...

Question 19

An electronics company wants to compare the quality of their cell phones to the cell phones from three competitors. They sample 10 phones from each company and count the number of defects for each phone. If ANOVA were used to compare the average number of defects, then the treatments would be defined as:

Accepted Answer

A)  The number of cell phones sampled. 
B)  The average number of defects. 
C)  The total number of phones. 
D)  The four companies. 
A)  The number of cell phones sampled. 
B)  The average number of defects. 
C)  The total number of phones. 
D)  The four companies.

Question 20

A random sample of 16 companies was selected and asked for their annual dividend rate in three different industries: utilities, banking, and insurance. The ANOVA comparing the mean annual dividend rate among three industries rejected the null hypothesis. The Mean Square Error (MSE) was 3.36. The following table summarized the results:  
 When comparing the mean annual dividend rate for companies in the utilities and insurance industries, the following 95% confidence interval can be constructed:

Accepted Answer

A)  5.78 $\pm$ 2.160 * 2.40 
B)  5.78 $\pm$ 2.120 * 2.40 
C)  5.78 $\pm$ 2.160 * 1.11 
D)  5.78 $\pm$ 2.120 * 1.11 
A)  5.78 $\pm$ 2.160 * 2.40 
B)  5.78 $\pm$ 2.120 * 2.40 
C)  5.78 $\pm$ 2.160 * 1.11 
D)  5.78 $\pm$ 2.120 * 1.11

In a two-way ANOVA with interaction, a significant interaction term indicates that

A bottle cap manufacturer with four machines and six operators wants to see if variation in production is due to the machines and/or the operators. ANOVA table follows. What is the mean square for operators?

What is the null hypothesis for an ANOVA comparing three population means? ____________________

In a two-way ANOVA, the sources of variation are

An ANOVA comparing the waiting times for four different emergency rooms shows the following comparison of the four mean waiting times. Which two pairs of means are significantly different?

In an one-way ANOVA, how many degrees of freedom are associated with the numerator of the F ratio? _______

In a study of protein breakfast bars, five bars from each of three brands were tested to see if the mean amount of protein per bar differs among the brands. If the sum of squares for the brands is 0.07, what is the mean square for brands? ______

ANOVA requires that the populations should be , , and _.

Two accounting professors decided to compare the variance of their grading procedures. To accomplish this, they each graded the same 10 exams with the following results: What is H₀?

When testing for differences between treatment means, the t statistic is based on:

In a two-way ANOVA table with interaction, what are the error degrees of freedom? _________

A two-way ANOVA with interaction has how many sources of variation?

In an ANOVA table, k represents the total number of sample observations and n represents the total number of treatments.

An F statistic is:

What statistical technique is used to test the equality of three or more population means? ____________________

A bottle cap manufacturer with four machines and six operators wants to see if variation in production is due to the machines and/or the operators. ANOVA table follows. What are the degrees of freedom for the operators?

A bottle cap manufacturer with four machines and six operators wants to see if variation in production is due to the machines and/or the operators. ANOVA table follows. What are the degrees of freedom for the errors?

What Is Statistics

Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation

Describing Data: Numerical Measures

Describing Data: Displaying and Exploring Data

A Survey of Probability Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Correlation and Linear Regression

Multiple Regression Analysis

Index Numbers

Time Series and Forecasting

Nonparametric Methods: Goodness-Of-Fit Tests

Nonparametric Methods: Analysis of Ranked Data

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters

Exam 12: Analysis of Variance

In a two-way ANOVA with interaction, a significant interaction term indicates that

A bottle cap manufacturer with four machines and six operators wants to see if variation in production is due to the machines and/or the operators. ANOVA table follows. What is the mean square for operators?

What is the null hypothesis for an ANOVA comparing three population means? ____________________

In a two-way ANOVA, the sources of variation are

An ANOVA comparing the waiting times for four different emergency rooms shows the following comparison of the four mean waiting times. Which two pairs of means are significantly different?

In an one-way ANOVA, how many degrees of freedom are associated with the numerator of the F ratio? _______

In a study of protein breakfast bars, five bars from each of three brands were tested to see if the mean amount of protein per bar differs among the brands. If the sum of squares for the brands is 0.07, what is the mean square for brands? ______

ANOVA requires that the populations should be ______, ______, and _____.

Two accounting professors decided to compare the variance of their grading procedures. To accomplish this, they each graded the same 10 exams with the following results: What is H0?

When testing for differences between treatment means, the t statistic is based on:

In a two-way ANOVA table with interaction, what are the error degrees of freedom? _________

A two-way ANOVA with interaction has how many sources of variation?

In an ANOVA table, k represents the total number of sample observations and n represents the total number of treatments.

An F statistic is:

What statistical technique is used to test the equality of three or more population means? ____________________

A bottle cap manufacturer with four machines and six operators wants to see if variation in production is due to the machines and/or the operators. ANOVA table follows. What are the degrees of freedom for the operators?

A bottle cap manufacturer with four machines and six operators wants to see if variation in production is due to the machines and/or the operators. ANOVA table follows. What are the degrees of freedom for the errors?

What Is Statistics

Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation

Describing Data: Numerical Measures

Describing Data: Displaying and Exploring Data

A Survey of Probability Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Correlation and Linear Regression

Multiple Regression Analysis

Index Numbers

Time Series and Forecasting

Nonparametric Methods: Goodness-Of-Fit Tests

Nonparametric Methods: Analysis of Ranked Data

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters

ANOVA requires that the populations should be , , and _.

Two accounting professors decided to compare the variance of their grading procedures. To accomplish this, they each graded the same 10 exams with the following results: What is H₀?