Question 1

The F-test statistic in ANOVA is equal to MS____________________ divided by MS____________________
and H0 is rejected for ____________________ values of F.

Accepted Answer

Question 2

The numerator and denominator degrees of freedom for the F-test in a one-way ANOVA are,respectively,

Accepted Answer

A) (n − k)and (k − 1) 
B) (k − 1)and (n − k) 
C) (k − n)and (n − 1) 
D) (n − 1)and (k − n) 
A) (n − k)and (k − 1) 
B) (k − 1)and (n − k) 
C) (k − n)and (n − 1) 
D) (n − 1)and (k − n)

Question 3

A randomized block experiment having five treatments and six blocks produced the following values: SST = 252,SS(Total)= 1,545,SSE = 198.The value of SSB must be 1095.

Accepted Answer

A) True 
 B)False

Question 4

SSE in the independent samples design is equal to the sum of SSB and SSE in the randomized block design.

Accepted Answer

A) True 
 B)False

Question 5

Keyboard Configuration and Size
 The data shown below were taken from a 2 × 3 factorial experiment to examine the effects of factor A (keyboard configuration,3 levels)and factor B (keyboard size,2 levels)on typing speed.Each cell consists of the times needed for each of 4 randomly assigned keyboardists to type a standard document under each set of conditions (in minutes).   ​ ​
-{Keyboard Configuration and Size Narrative} Test at the 5% significance level to determine if time differences exist among the different keyboard configurations.

Accepted Answer

H₀: No differences in average time among

Question 6

Which of the following is not a required condition for one-way ANOVA?

Accepted Answer

A) The sample sizes must be equal. 
B) The populations must all be normally distributed. 
C) The population variances must be equal. 
D) The samples for each treatment must be selected randomly and independently. 
A) The sample sizes must be equal. 
B) The populations must all be normally distributed. 
C) The population variances must be equal. 
D) The samples for each treatment must be selected randomly and independently.

Question 7

Gold Funds 
An investor studied the percentage rates of return of three different gold funds.Random samples of percentage rates of return for four periods were taken from each fund.The results appear in the table below:   ​ ​
-{Gold Funds Narrative} Test at the 5% significance level to determine whether the mean percentage rates for the three funds differ.

Accepted Answer

H₀: μ₁ = μ₂ = μ₃ vs.H₁: At least two means di

Question 8

The Bonferroni adjustment decreases the experimentwise Type I error rate,but it increases the probability of a Type II error.

Accepted Answer

A) True 
 B)False

Question 9

In a completely randomized design,15 experimental units were assigned to each of four treatments.Fill in the blanks (identified by asterisks)in the partial ANOVA table shown below.

Accepted Answer

The answer of In a completely randomized design,15 experimental units...

Question 10

The purpose of designing a randomized block experiment is to reduce the between-treatments variation (SST)to more easily detect differences between the treatment means.

Accepted Answer

A) True 
 B)False

Question 11

How does conducting multiple t-tests compare to conducting a single F-test?

Accepted Answer

A) Multiple t-tests increases the chance of a Type I error. 
B) Multiple t-tests decreases the chance of a Type I error. 
C) Multiple t-tests does not affect the chance of a Type I error. 
D) This comparison cannot be made without knowing the number of populations. 
A) Multiple t-tests increases the chance of a Type I error. 
B) Multiple t-tests decreases the chance of a Type I error. 
C) Multiple t-tests does not affect the chance of a Type I error. 
D) This comparison cannot be made without knowing the number of populations.

Question 12

The analysis of variance is a procedure that allows statisticians to compare two or more population:

Accepted Answer

A) proportions. 
B) means. 
C) variances. 
D) standard deviations. 
A) proportions. 
B) means. 
C) variances. 
D) standard deviations.

Question 13

In a completely randomized design,12 experimental units were assigned to the first treatment,15 units to the second treatment,and 18 units to the third treatment.A partial ANOVA table is shown below:   ​ 
a.Fill in the blanks (identified by asterisks)in the above ANOVA table.
b.Test at the 5% significance level to determine if differences exist among the three treatment means.

Accepted Answer

The answer of In a completely randomized design,12 experimental units...

Question 14

LSAT Scores
 A recent college graduate is in the process of deciding which one of three Law schools he should apply to.He decides to judge the quality of the schools on the basis of the Law School Admission Test (LSAT)scores of those who are accepted into the school.A random sample of six students in each school produced the following LSAT scores.An F-test using ANOVA concluded that average LSAT scores differ for at least two of the schools.   ​ ​
-{LSAT Scores Narrative} Use Fisher's LSD method with α = 0.05 to determine which school's means differ.

Accepted Answer

LSD = 64.65 @#IMG-DLM& ​ The mean LSAT score for S

Question 15

In employing the randomized block design,the primary interest lies in reducing sum of squares for ____________________.

Accepted Answer

The answer of In employing the randomized block design,the primary...

Question 16

SSE measures the variation ____________________ treatments.

Accepted Answer

The answer of SSE measures the variation ____________________ treatments....

Question 17

The ANOVA procedure tests to determine whether differences exist between two or more population ____________________.

Accepted Answer

The answer of The ANOVA procedure tests to determine whether...

Question 18

One example of a blocking variable is the dosage level that each subject is assigned to in a randomized experiment.

Accepted Answer

A) True 
 B)False

Question 19

In one-way ANOVA,the term   refers to the:

Accepted Answer

A) weighted average of the sample means. 
B) sum of the sample means divided by the total number of observations. 
C) sum of the population means. 
D) sum of the sample means. 
A) weighted average of the sample means. 
B) sum of the sample means divided by the total number of observations. 
C) sum of the population means. 
D) sum of the sample means.

Question 20

In a two-factor ANOVA,there are 5 levels for factor A,4 levels for factor B,and 3 observations for each combination of factor A and factor B levels.The number of treatments in this experiment equals 20.

Accepted Answer

A) True 
 B)False

The F-test statistic in ANOVA is equal to MS divided by MS and H₀ is rejected for values of F.

The numerator and denominator degrees of freedom for the F-test in a one-way ANOVA are,respectively,

A randomized block experiment having five treatments and six blocks produced the following values: SST = 252,SS(Total)= 1,545,SSE = 198.The value of SSB must be 1095.

SSE in the independent samples design is equal to the sum of SSB and SSE in the randomized block design.

Which of the following is not a required condition for one-way ANOVA?

The Bonferroni adjustment decreases the experimentwise Type I error rate,but it increases the probability of a Type II error.

In a completely randomized design,15 experimental units were assigned to each of four treatments.Fill in the blanks (identified by asterisks)in the partial ANOVA table shown below.

The purpose of designing a randomized block experiment is to reduce the between-treatments variation (SST)to more easily detect differences between the treatment means.

How does conducting multiple t-tests compare to conducting a single F-test?

The analysis of variance is a procedure that allows statisticians to compare two or more population:

In employing the randomized block design,the primary interest lies in reducing sum of squares for ____________________.

SSE measures the variation ____________________ treatments.

The ANOVA procedure tests to determine whether differences exist between two or more population ____________________.

One example of a blocking variable is the dosage level that each subject is assigned to in a randomized experiment.

In one-way ANOVA,the term refers to the:

In a two-factor ANOVA,there are 5 levels for factor A,4 levels for factor B,and 3 observations for each combination of factor A and factor B levels.The number of treatments in this experiment equals 20.

What Is Statistics

Graphical Descriptive Techniques 1

Graphical Descriptive Techniques 2

Numerical Descriptive Techniques

Data Collection and Sampling

Probability

Random Variables and Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions

Introduction to Estimation

Introduction to Hypothesis Testing

Inference About a Population

Inference About Comparing Two Populations

Chi-Squared Tests

Simple Linear Regression and Correlation

Multiple Regression

Model Building

Nonparametric Statistics

Time-Series Analytics and Forecasting

Statistical Process Control

Decision Analysis

Conclusion

Filters

Exam 14: Analysis of Variance

The F-test statistic in ANOVA is equal to MS____________________ divided by MS____________________ and H0 is rejected for ____________________ values of F.

The numerator and denominator degrees of freedom for the F-test in a one-way ANOVA are,respectively,

A randomized block experiment having five treatments and six blocks produced the following values: SST = 252,SS(Total)= 1,545,SSE = 198.The value of SSB must be 1095.

SSE in the independent samples design is equal to the sum of SSB and SSE in the randomized block design.

Which of the following is not a required condition for one-way ANOVA?

The Bonferroni adjustment decreases the experimentwise Type I error rate,but it increases the probability of a Type II error.

In a completely randomized design,15 experimental units were assigned to each of four treatments.Fill in the blanks (identified by asterisks)in the partial ANOVA table shown below.

The purpose of designing a randomized block experiment is to reduce the between-treatments variation (SST)to more easily detect differences between the treatment means.

How does conducting multiple t-tests compare to conducting a single F-test?

The analysis of variance is a procedure that allows statisticians to compare two or more population:

In employing the randomized block design,the primary interest lies in reducing sum of squares for ____________________.

SSE measures the variation ____________________ treatments.

The ANOVA procedure tests to determine whether differences exist between two or more population ____________________.

One example of a blocking variable is the dosage level that each subject is assigned to in a randomized experiment.

In one-way ANOVA,the term refers to the:

In a two-factor ANOVA,there are 5 levels for factor A,4 levels for factor B,and 3 observations for each combination of factor A and factor B levels.The number of treatments in this experiment equals 20.

What Is Statistics

Graphical Descriptive Techniques 1

Graphical Descriptive Techniques 2

Numerical Descriptive Techniques

Data Collection and Sampling

Probability

Random Variables and Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions

Introduction to Estimation

Introduction to Hypothesis Testing

Inference About a Population

Inference About Comparing Two Populations

Chi-Squared Tests

Simple Linear Regression and Correlation

Multiple Regression

Model Building

Nonparametric Statistics

Time-Series Analytics and Forecasting

Statistical Process Control

Decision Analysis

Conclusion

Filters

The F-test statistic in ANOVA is equal to MS divided by MS and H₀ is rejected for values of F.