Question 1

In general,what factors are most likely to reject the null hypothesis for an ANOVA?​

Accepted Answer

A) small mean differences and small variances​ 
B) ​small mean differences and large variances 
C) ​large mean differences and small variances 
D) ​large mean differences and large variances 
A) small mean differences and small variances​ 
B) ​small mean differences and large variances 
C) ​large mean differences and small variances 
D) ​large mean differences and large variances

Question 2

In an analysis of variance,what is a factor?​

Accepted Answer

A) ​a dependent variable 
B) ​an independent (or quasi-independent) variable 
C) ​a treatment mean 
D) ​a treatment total 
A) ​a dependent variable 
B) ​an independent (or quasi-independent) variable 
C) ​a treatment mean 
D) ​a treatment total

Question 3

The following table shows the results of an analysis of variance comparing three treatment conditions with a sample of n = 7 participants in each treatment.Note that several values are missing in the table.What is the missing value for SStotal?? $$\begin{array} { l c c l l } 
\text { Source } & \mathrm { SS } & \mathrm { df } & \mathrm { MS } & \
\hline \text { Between } & 20 & \mathrm { xx } & \mathrm { xx } & \mathrm { F } = \mathrm { xx } \
\text { Within } & \mathrm { xx } & \mathrm { xx } & 2 & \
\text { Total } & \mathrm { xx } & \mathrm { xx } & & \
\hline
\end{array}$$ ?

Accepted Answer

A) ?16 
B) ?23 
C) ?29 
D) ?56 
A) ?16 
B) ?23 
C) ?29 
D) ?56

Question 4

A research report presents the results of an independent-measures ANOVA as follows: F(3,28)= 5.36,p < .01.The research study compared three treatments.

Accepted Answer

A) True 
 B)False

Question 5

A research report concludes that there are significant differences among treatments,with "F(2,27)= 8.62,p < .01." If the same number of participants was used in all of the treatment conditions,then how many individuals were in each treatment?​

Accepted Answer

A) 7​ 
B) ​9 
C) ​10 
D) ​30 
A) 7​ 
B) ​9 
C) ​10 
D) ​30

Question 6

An independent-measures research study compares three treatment conditions using a sample of n = 5 in each treatment.For this study,the three sample means are,M1 = 1,M2 = 2,and M3 = 3.For the ANOVA,what value would be obtained for SSbetween?​

Accepted Answer

A) ​1 
B) ​5 
C) ​10 
D) ​15 
A) ​1 
B) ​5 
C) ​10 
D) ​15

Question 7

The following table shows the results of an analysis of variance comparing two treatment conditions with a sample of n = 11 participants in each treatment.Note that several values are missing in the table.What is the missing value for the F-ratio?? $$\begin{array} { l l l l l } 
\text { Source } & \mathrm { SS } & \mathrm { df } & \mathrm { MS } & \
\hline \text { Between } & \mathrm { xx } & \mathrm { xx } & 14 & \mathrm {~F} = \mathrm { xx } \
\text { Within } & \mathrm { xx } & \mathrm { xx } & \mathrm { xx } & \
\text { Total } & 154 & \mathrm { xx } & & \
\hline
\end{array}$$

Accepted Answer

A) ?2 
B) ?7 
C) ?14 
D) ?28 
A) ?2 
B) ?7 
C) ?14 
D) ?28

Question 8

Tukey's HSD test allows one to compute a single value that determines the minimum difference between treatment means that is necessary for significance.

Accepted Answer

A) True 
 B)False

Question 9

Describe the circumstances under which you should use ANOVA instead of t tests,and explain why t tests are inappropriate in these circumstances.

Accepted Answer

ANOVA should be used when there are more

Question 10

When comparing more than two treatment means,should you use an analysis of variance rather than using several t tests,and if so,why?​

Accepted Answer

A) ​Yes. Using several t tests increases the risk of a Type I error. 
B) ​Yes. Using several t tests increases the risk of a Type II error. 
C) ​Yes. The analysis of variance is more likely to detect a treatment effect. 
D) ​No. There is no advantage to using an analysis of variance rather than several t tests. 
A) ​Yes. Using several t tests increases the risk of a Type I error. 
B) ​Yes. Using several t tests increases the risk of a Type II error. 
C) ​Yes. The analysis of variance is more likely to detect a treatment effect. 
D) ​No. There is no advantage to using an analysis of variance rather than several t tests.

Question 11

A researcher reports an F-ratio with df = 2,18 from an independent-measures research study.Based on the df values,how many treatments were compared in the study and what was the total number of subjects participating in the study?​

Accepted Answer

A) ​2 treatments and 19 subjects 
B) ​2 treatments and 20 subjects 
C) ​3 treatments and 21 subjects 
D) ​3 treatments and 22 subjects 
A) ​2 treatments and 19 subjects 
B) ​2 treatments and 20 subjects 
C) ​3 treatments and 21 subjects 
D) ​3 treatments and 22 subjects

Question 12

If an analysis of variance is used for the following data,what would be the effect of changing the value of SS1 to 50?? $$\begin{array} { l l } 
\text { Sample Data}\
\mathrm { M } _ { 1 } = 10 & \mathrm { M } _ { 2 } = 15 \
\mathrm { SS } _ { 1 } = 90 & \mathrm { SS } _ { 2 } = 70 \
\hline
\end{array}$$ ?

Accepted Answer

A) Increase SSwithin and increase the size of the F-ratio.? 
B) ?Increase SSwithin and decrease the size of the F-ratio. 
C) ?Decrease SSwithin and increase the size of the F-ratio. 
D) ?Decrease SSwithin and decrease the size of the F-ratio. 
A) Increase SSwithin and increase the size of the F-ratio.? 
B) ?Increase SSwithin and decrease the size of the F-ratio. 
C) ?Decrease SSwithin and increase the size of the F-ratio. 
D) ?Decrease SSwithin and decrease the size of the F-ratio.

Question 13

For an analysis of variance comparing three treatment means,H0 states that all three population means are the same and H1 states that all three population means are different.

Accepted Answer

A) True 
 B)False

Question 14

What is the purpose for post tests?​

Accepted Answer

A) ​to determine whether or not a Type I error was committed 
B) ​to determine how much difference exists between the treatments 
C) ​to determine which treatments are significantly different 
D) ​to determine whether or not the sample is normally distributed 
A) ​to determine whether or not a Type I error was committed 
B) ​to determine how much difference exists between the treatments 
C) ​to determine which treatments are significantly different 
D) ​to determine whether or not the sample is normally distributed

In general,what factors are most likely to reject the null hypothesis for an ANOVA?

In an analysis of variance,what is a factor?

The following table shows the results of an analysis of variance comparing three treatment conditions with a sample of n = 7 participants in each treatment.Note that several values are missing in the table.What is the missing value for SS_total?? Source Between 20 = Within 2 Total ?

A research report presents the results of an independent-measures ANOVA as follows: F(3,28)= 5.36,p < .01.The research study compared three treatments.

A research report concludes that there are significant differences among treatments,with "F(2,27)= 8.62,p < .01." If the same number of participants was used in all of the treatment conditions,then how many individuals were in each treatment?

An independent-measures research study compares three treatment conditions using a sample of n = 5 in each treatment.For this study,the three sample means are,M₁ = 1,M₂ = 2,and M₃ = 3.For the ANOVA,what value would be obtained for SS_between?

The following table shows the results of an analysis of variance comparing two treatment conditions with a sample of n = 11 participants in each treatment.Note that several values are missing in the table.What is the missing value for the F-ratio?? Source Between 14 = Within Total 154

Tukey's HSD test allows one to compute a single value that determines the minimum difference between treatment means that is necessary for significance.

Describe the circumstances under which you should use ANOVA instead of t tests,and explain why t tests are inappropriate in these circumstances.

When comparing more than two treatment means,should you use an analysis of variance rather than using several t tests,and if so,why?

A researcher reports an F-ratio with df = 2,18 from an independent-measures research study.Based on the df values,how many treatments were compared in the study and what was the total number of subjects participating in the study?

If an analysis of variance is used for the following data,what would be the effect of changing the value of SS₁ to 50?? Sample Data =10 =15 =90 =70 ?

For an analysis of variance comparing three treatment means,H₀ states that all three population means are the same and H₁ states that all three population means are different.

What is the purpose for post tests?

Introduction to Statistics

Frequency Distributions

Central Tendency

Variability

Z-Scores: Location of Scores and Standardized Distributions

Probability

Probability and Samples: the Distribution of Sample Means

Introduction to Hypothesis Testing

Introduction to the T Statistic

The T Test for Two Independent Samples

The T Test for Two Related Samples

Repeated-Measures Analysis of Variance Anova

Two-Factor Analysis of Variance Independent Measures

Correlation

Introduction to Regression

The Chi-Square Statistic: Tests for Goodness of Fit and Independence

The Binomial Test

Filters

Exam 12: Introduction to Analysis of Variance

In general,what factors are most likely to reject the null hypothesis for an ANOVA?​

In an analysis of variance,what is a factor?​

The following table shows the results of an analysis of variance comparing three treatment conditions with a sample of n = 7 participants in each treatment.Note that several values are missing in the table.What is the missing value for SStotal?? Source Between 20 = Within 2 Total ?

A research report presents the results of an independent-measures ANOVA as follows: F(3,28)= 5.36,p < .01.The research study compared three treatments.

A research report concludes that there are significant differences among treatments,with "F(2,27)= 8.62,p < .01." If the same number of participants was used in all of the treatment conditions,then how many individuals were in each treatment?​

An independent-measures research study compares three treatment conditions using a sample of n = 5 in each treatment.For this study,the three sample means are,M1 = 1,M2 = 2,and M3 = 3.For the ANOVA,what value would be obtained for SSbetween?​

The following table shows the results of an analysis of variance comparing two treatment conditions with a sample of n = 11 participants in each treatment.Note that several values are missing in the table.What is the missing value for the F-ratio?? Source Between 14 = Within Total 154

Tukey's HSD test allows one to compute a single value that determines the minimum difference between treatment means that is necessary for significance.

Describe the circumstances under which you should use ANOVA instead of t tests,and explain why t tests are inappropriate in these circumstances.

When comparing more than two treatment means,should you use an analysis of variance rather than using several t tests,and if so,why?​

A researcher reports an F-ratio with df = 2,18 from an independent-measures research study.Based on the df values,how many treatments were compared in the study and what was the total number of subjects participating in the study?​

If an analysis of variance is used for the following data,what would be the effect of changing the value of SS1 to 50?? Sample Data =10 =15 =90 =70 ?

For an analysis of variance comparing three treatment means,H0 states that all three population means are the same and H1 states that all three population means are different.

What is the purpose for post tests?​

Introduction to Statistics

Frequency Distributions

Central Tendency

Variability

Z-Scores: Location of Scores and Standardized Distributions

Probability

Probability and Samples: the Distribution of Sample Means

Introduction to Hypothesis Testing

Introduction to the T Statistic

The T Test for Two Independent Samples

The T Test for Two Related Samples

Repeated-Measures Analysis of Variance Anova

Two-Factor Analysis of Variance Independent Measures

Correlation

Introduction to Regression

The Chi-Square Statistic: Tests for Goodness of Fit and Independence

The Binomial Test

Filters

In general,what factors are most likely to reject the null hypothesis for an ANOVA?

In an analysis of variance,what is a factor?

The following table shows the results of an analysis of variance comparing three treatment conditions with a sample of n = 7 participants in each treatment.Note that several values are missing in the table.What is the missing value for SS_total?? Source Between 20 = Within 2 Total ?

A research report concludes that there are significant differences among treatments,with "F(2,27)= 8.62,p < .01." If the same number of participants was used in all of the treatment conditions,then how many individuals were in each treatment?

An independent-measures research study compares three treatment conditions using a sample of n = 5 in each treatment.For this study,the three sample means are,M₁ = 1,M₂ = 2,and M₃ = 3.For the ANOVA,what value would be obtained for SS_between?

When comparing more than two treatment means,should you use an analysis of variance rather than using several t tests,and if so,why?

A researcher reports an F-ratio with df = 2,18 from an independent-measures research study.Based on the df values,how many treatments were compared in the study and what was the total number of subjects participating in the study?

If an analysis of variance is used for the following data,what would be the effect of changing the value of SS₁ to 50?? Sample Data =10 =15 =90 =70 ?

For an analysis of variance comparing three treatment means,H₀ states that all three population means are the same and H₁ states that all three population means are different.

What is the purpose for post tests?