Question 1

For an ANOVA comparing three treatment conditions,what is stated by the null hypothesis (H0)?

Accepted Answer

A) There are no differences between any of the population means. 
B) At least one of the three population means is different from another mean. 
C) All three of the population means are different from each other. 
D) None of the other choices is correct.

Question 2

An ANOVA comparing two treatment conditions produces SSwithin = 80 and SSbetween = 50.For these data,F1F1F1S1F1F1F102= 25/80.

Accepted Answer

A) True 
 B)False

Question 3

For an ANOVA comparing three treatment conditions,what is stated by the alternative hypothesis (H1)?

Accepted Answer

A) There are no differences between any of the population means. 
B) At least one of the three population means is different from another mean. 
C) All three of the population means are different from each other. 
D) None of the other choices is correct.

Question 4

A researcher reports an F-ratio with df = 1,24 for an independent-measures experiment.If all the treatments had the same number of participants,then how many individuals were in each treatment?

Accepted Answer

A) 11 
B) 12 
C) 13 
D) 14

Question 5

If an analysis of variance is used for the following data,what would be the effect of changing the value of M2 to 25? Sample Data

Accepted Answer

A) Increase SSbetween and increase the size of the F-ratio M1 = 10 M2 = 20 
B) Increase SSbetween and decrease the size of the F-ratio SS1 = 90 SS2 = 70 
C) Decrease SSbetween and increase the size of the F-ratio 
D) Decrease SSbetween and decrease the size of the F-ratio

Question 6

In an analysis of variance,MStotal = MSbetween + MSwithin.

Accepted Answer

A) True 
 B)False

Question 7

An ANOVA is used to evaluate the mean differences among three treatment conditions with a sample of n = 12 participants in each treatment.For this study,what is dftotal?

Accepted Answer

A) 2 
B) 11 
C) 33 
D) 35

Question 8

A researcher uses an ANOVA to evaluate the mean difference between two treatments and obtains F(1,22)= 4.00.If the researcher had used an independent-measures t test to evaluate the data,what t value would be obtained?

Accepted Answer

A) t(22)= 2.00 
B) t(22)= 16.00 
C) t(23)= 2.00 
D) t(23)= 16.00

Question 9

On average,what value is expected for the F-ratio if the null hypothesis is true?

Accepted Answer

A) 0 
B) 1.00 
C) k - 1 
D) N - k

Question 10

In analysis of variance,what is measured by the MS values?

Accepted Answer

A) Sample variance 
B) Population variance 
C) The average distance from one mean to another 
D) The total variability for the set of N scores

Question 11

Which of the following describes a typical distribution of F-ratios?

Accepted Answer

A) Symmetrical with a mean of zero 
B) Positively skewed with all values greater than or equal to zero 
C) Negatively skewed with all values greater than or equal to zero 
D) Symmetrical with a mean equal to dfbetween

Question 12

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) None of these

Question 13

For an ANOVA,when the null hypothesis is true,the F-ratio is balanced so that the numerator and the denominator are both measuring the same sources of variance.

Accepted Answer

A) True 
 B)False

Question 14

SSwithin measures the size of the sample variances.

Accepted Answer

A) True 
 B)False

Question 15

If an analysis of variance produces SSbetween treatments = 30 and MSbetween treatments = 10,then the ANOVA is comparing four treatment conditions.

Accepted Answer

A) True 
 B)False

Question 16

An ANOVA is used to evaluate the mean differences among three treatment conditions with a sample of n = 12 participants in each treatment.For this study,what is dfwithin treatments?

Accepted Answer

A) 2 
B) 11 
C) 33 
D) 35

Question 17

A researcher uses an independent-measures t test to evaluate the mean difference between two treatments.If the t statistic has df = 12,then an ANOVA evaluating the same data would produce an F-ratio with df = 1,11.

Accepted Answer

A) True 
 B)False

Question 18

An F-ratio near 1.00 is an indication that the null hypothesis is likely to be true.

Accepted Answer

A) True 
 B)False

Question 19

For an independent-measures ANOVA comparing four treatment conditions,dfbetween = 3.

Accepted Answer

A) True 
 B)False

Question 20

In an analysis of variance,which of the following is determined the size of the sample variances?

Accepted Answer

A) SSbetween 
B) SSwithin 
C) dfbetween 
D) dfwithin

Exam 12: Introduction to Analysis of Variance

For an ANOVA comparing three treatment conditions,what is stated by the null hypothesis (H₀) ?

An ANOVA comparing two treatment conditions produces SS_within = 80 and SS_between = 50.For these data,²= 25/80.

For an ANOVA comparing three treatment conditions,what is stated by the alternative hypothesis (H₁) ?

A researcher reports an F-ratio with df = 1,24 for an independent-measures experiment.If all the treatments had the same number of participants,then how many individuals were in each treatment?

If an analysis of variance is used for the following data,what would be the effect of changing the value of M₂ to 25? Sample Data

In an analysis of variance,MS_total = MS_between + MS_within.

An ANOVA is used to evaluate the mean differences among three treatment conditions with a sample of n = 12 participants in each treatment.For this study,what is df_total?

A researcher uses an ANOVA to evaluate the mean difference between two treatments and obtains F(1,22) = 4.00.If the researcher had used an independent-measures t test to evaluate the data,what t value would be obtained?

On average,what value is expected for the F-ratio if the null hypothesis is true?

In analysis of variance,what is measured by the MS values?

Which of the following describes a typical distribution of F-ratios?

What is the purpose for post tests?

For an ANOVA,when the null hypothesis is true,the F-ratio is balanced so that the numerator and the denominator are both measuring the same sources of variance.

SS_within measures the size of the sample variances.

If an analysis of variance produces SS_{between treatments} = 30 and MS_{between treatments} = 10,then the ANOVA is comparing four treatment conditions.

An ANOVA is used to evaluate the mean differences among three treatment conditions with a sample of n = 12 participants in each treatment.For this study,what is df_{within treatments}?

A researcher uses an independent-measures t test to evaluate the mean difference between two treatments.If the t statistic has df = 12,then an ANOVA evaluating the same data would produce an F-ratio with df = 1,11.

An F-ratio near 1.00 is an indication that the null hypothesis is likely to be true.

For an independent-measures ANOVA comparing four treatment conditions,df_between = 3.

In an analysis of variance,which of the following is determined the size of the sample variances?

Exam 12: Introduction to Analysis of Variance

For an ANOVA comparing three treatment conditions,what is stated by the null hypothesis (H0) ?

An ANOVA comparing two treatment conditions produces SSwithin = 80 and SSbetween = 50.For these data,2= 25/80.

For an ANOVA comparing three treatment conditions,what is stated by the alternative hypothesis (H1) ?

A researcher reports an F-ratio with df = 1,24 for an independent-measures experiment.If all the treatments had the same number of participants,then how many individuals were in each treatment?

If an analysis of variance is used for the following data,what would be the effect of changing the value of M2 to 25? Sample Data

In an analysis of variance,MStotal = MSbetween + MSwithin.

An ANOVA is used to evaluate the mean differences among three treatment conditions with a sample of n = 12 participants in each treatment.For this study,what is dftotal?

A researcher uses an ANOVA to evaluate the mean difference between two treatments and obtains F(1,22) = 4.00.If the researcher had used an independent-measures t test to evaluate the data,what t value would be obtained?

On average,what value is expected for the F-ratio if the null hypothesis is true?

In analysis of variance,what is measured by the MS values?

Which of the following describes a typical distribution of F-ratios?

What is the purpose for post tests?

For an ANOVA,when the null hypothesis is true,the F-ratio is balanced so that the numerator and the denominator are both measuring the same sources of variance.

SSwithin measures the size of the sample variances.

If an analysis of variance produces SSbetween treatments = 30 and MSbetween treatments = 10,then the ANOVA is comparing four treatment conditions.

An ANOVA is used to evaluate the mean differences among three treatment conditions with a sample of n = 12 participants in each treatment.For this study,what is dfwithin treatments?

A researcher uses an independent-measures t test to evaluate the mean difference between two treatments.If the t statistic has df = 12,then an ANOVA evaluating the same data would produce an F-ratio with df = 1,11.

An F-ratio near 1.00 is an indication that the null hypothesis is likely to be true.

For an independent-measures ANOVA comparing four treatment conditions,dfbetween = 3.

In an analysis of variance,which of the following is determined the size of the sample variances?

For an ANOVA comparing three treatment conditions,what is stated by the null hypothesis (H₀) ?

An ANOVA comparing two treatment conditions produces SS_within = 80 and SS_between = 50.For these data,²= 25/80.

For an ANOVA comparing three treatment conditions,what is stated by the alternative hypothesis (H₁) ?

If an analysis of variance is used for the following data,what would be the effect of changing the value of M₂ to 25? Sample Data

In an analysis of variance,MS_total = MS_between + MS_within.

An ANOVA is used to evaluate the mean differences among three treatment conditions with a sample of n = 12 participants in each treatment.For this study,what is df_total?

SS_within measures the size of the sample variances.

If an analysis of variance produces SS_{between treatments} = 30 and MS_{between treatments} = 10,then the ANOVA is comparing four treatment conditions.

An ANOVA is used to evaluate the mean differences among three treatment conditions with a sample of n = 12 participants in each treatment.For this study,what is df_{within treatments}?

For an independent-measures ANOVA comparing four treatment conditions,df_between = 3.