Question 1

based on the following tables.
 
-Advanced topic: At the .01 significance level,the null hypothesis __________.(Provide hypothesis testing decision.)

Accepted Answer

cannot be rejected [because .01 level critical F (1,8)= 11.26]

Question 2

In research articles,post-hoc comparisons are often displayed in tables with __________ placed by the means to indicate whether the means are alike or different.

Accepted Answer

letters,small letters,letter subscripts,lowercase letters

Question 3

When sample sizes are equal,MSWithin is figured by

Accepted Answer

A) summing the population variance estimates figured within each group and dividing by the total number of participants (over all groups). 
B) summing the population variance estimates figured within each group and dividing this sum by the number of groups. 
C) multiplying the within-groups sum of squares (SSWithin)by the size of each sample (n). 
D) dividing the within-groups sum of squares (SSWithin)by the size of each sample (n). 
A) summing the population variance estimates figured within each group and dividing by the total number of participants (over all groups). 
B) summing the population variance estimates figured within each group and dividing this sum by the number of groups. 
C) multiplying the within-groups sum of squares (SSWithin)by the size of each sample (n). 
D) dividing the within-groups sum of squares (SSWithin)by the size of each sample (n). B

Question 4

When carrying out an analysis of variance with equal sample sizes,the estimated variance of the distribution of means is converted to an estimated variance of the population of individual scores by

Accepted Answer

A) multiplying the estimated variance of the distribution of means by the number of scores in each sample. 
B) dividing the estimated variance between groups by the number of groups. 
C) dividing the estimated variance of the distribution of means by the number of scores in each sample. 
D) multiplying the estimated variance of the population of individual scores by the number of groups. 
A) multiplying the estimated variance of the distribution of means by the number of scores in each sample. 
B) dividing the estimated variance between groups by the number of groups. 
C) dividing the estimated variance of the distribution of means by the number of scores in each sample. 
D) multiplying the estimated variance of the population of individual scores by the number of groups.

Question 5

The overall test of the significance of the difference among groups in an analysis of variance is called

Accepted Answer

A) an omnibus test. 
B) a planned comparison. 
C) an absolute contrast. 
D) a post-hoc test. 
A) an omnibus test. 
B) a planned comparison. 
C) an absolute contrast. 
D) a post-hoc test.

Question 6

based on the following tables.
 
-Advanced topic: R2 = __________.

Accepted Answer

Question 7

"Proportion of variance accounted for" is also referred to as all of the following EXCEPT

Accepted Answer

A) R2 
B) the correlation ratio 
C) eta-squared 
D) chi-squared 
A) R2 
B) the correlation ratio 
C) eta-squared 
D) chi-squared

Question 8

based on the following tables.
 
-Advanced topic: SSWithin = __________.(Give a number.)

Accepted Answer

Question 9

Advanced topic: Σ(X-GM)2

Accepted Answer

A) equals the sum of squared deviations of scores from their group's mean. 
B) ignores the group a score is in. 
C) is always smaller than Σ(X-M)2. 
D) is used to determine the grand mean. 
A) equals the sum of squared deviations of scores from their group's mean. 
B) ignores the group a score is in. 
C) is always smaller than Σ(X-M)2. 
D) is used to determine the grand mean.

Question 10

If a study has 3 groups,each with 20 participants,and a one-way analysis of variance produced an F ratio of 6.21 that was significant at the .01 level,the results would be reported in a research article as __________.

Accepted Answer

F (2,57)=

Question 11

In an analysis of variance with a within-groups variance estimate of 8.5 and a between-groups variance estimate of 5.3,the F ratio is

Accepted Answer

A) 5.3 / 8.5 = 0.62 
B) 8.5 / 5.3 = 1.60 
C) √5.3 / 8.5 = 0.27 
D) √8.5 / 5.3 = 0.55 
A) 5.3 / 8.5 = 0.62 
B) 8.5 / 5.3 = 1.60 
C) √5.3 / 8.5 = 0.27 
D) √8.5 / 5.3 = 0.55

Question 12

Advanced topic: In an analysis of variance table,which of the following can be used to refer to "within-groups"?

Accepted Answer

A) treatment 
B) model 
C) group 
D) error 
A) treatment 
B) model 
C) group 
D) error

Question 13

Analysis of variance should be conducted only when

Accepted Answer

A) sample sizes are greater than 30 per group. 
B) sample sizes are smaller than 30 per group. 
C) population variances can be assumed to be equal. 
D) population sizes are approximately equal. 
A) sample sizes are greater than 30 per group. 
B) sample sizes are smaller than 30 per group. 
C) population variances can be assumed to be equal. 
D) population sizes are approximately equal.

Question 14

[(S2Between)(dfBetween)]/[(S2Between)(dfBetween)+ (S2Within)(dfWithin)] =

Accepted Answer

A) R2 
B) F 
C) f 
D) t 
A) R2 
B) F 
C) f 
D) t

Question 15

In a one-way analysis of variance,when sample sizes are equal,"(S2M)(n)" is the formula for __________.(Do not give a symbol.)

Accepted Answer

the betwee

Question 16

The between-groups population variance estimate divided by the within-groups population variance estimate is called __________.

Accepted Answer

The answer of The between-groups population variance estimate divided by...

Question 17

"S2Within" equals

Accepted Answer

A) the sum of squares within each group. 
B) the square root of the standard within-groups deviations from the mean. 
C) the squared variance within groups. 
D) the population variance estimate based on the variation within each of the groups. 
A) the sum of squares within each group. 
B) the square root of the standard within-groups deviations from the mean. 
C) the squared variance within groups. 
D) the population variance estimate based on the variation within each of the groups.

Question 18

High school juniors planning to attend college were randomly assigned to view one of four videos that emphasized social life,athletics,scholarship,or artistic/cultural opportunities at a particular college.After viewing the videos,the participants took a test of their desire to attend this college,with the following results.Using the .05 significance level,did the type of activity emphasized in the video affect the participants' desire to attend the college?   a.Use the five steps of hypothesis testing.
b.Sketch the distributions involved.
c.Figure the effect size of this study and indicate whether it is nearer to small,medium,or large.
d.Conduct a planned contrast for the Social Life versus Scholarship films (using the .05 level).
e.Conduct Scheffé's test for the groups in (d)and indicate the F cutoff,the F you would use for the comparison,and the hypothesis-testing decision (reject or do not reject).
f.Explain the logic of what you did to a person who is familiar with the t test for independent means,but who knows nothing about the analysis of variance.(Be sure your explanation includes the logic of comparing within-groups to between-groups population variance estimates,the logic of how each of these is figured,the F distribution,and the F table.)

Accepted Answer

A)F needed (df = 3,12; p < .05)= 3.49 So

Question 19

According to Cohen's conventions,an R2 of .14 would represent a

Accepted Answer

A) small effect 
B) medium effect 
C) large effect 
D) none of the above,as there are no standards for interpreting R2 
A) small effect 
B) medium effect 
C) large effect 
D) none of the above,as there are no standards for interpreting R2

Question 20

The method used to make planned comparisons that involves dividing the total significance level by the number of comparisons to be made is the __________.

Accepted Answer

Bonferroni

based on the following tables. -Advanced topic: At the .01 significance level,the null hypothesis __________.(Provide hypothesis testing decision.)

In research articles,post-hoc comparisons are often displayed in tables with __________ placed by the means to indicate whether the means are alike or different.

When sample sizes are equal,MS_Within is figured by

When carrying out an analysis of variance with equal sample sizes,the estimated variance of the distribution of means is converted to an estimated variance of the population of individual scores by

The overall test of the significance of the difference among groups in an analysis of variance is called

based on the following tables. -Advanced topic: R² = __________.

"Proportion of variance accounted for" is also referred to as all of the following EXCEPT

based on the following tables. -Advanced topic: SS_Within = __________.(Give a number.)

Advanced topic: Σ(X-GM)²

If a study has 3 groups,each with 20 participants,and a one-way analysis of variance produced an F ratio of 6.21 that was significant at the .01 level,the results would be reported in a research article as __________.

In an analysis of variance with a within-groups variance estimate of 8.5 and a between-groups variance estimate of 5.3,the F ratio is

Advanced topic: In an analysis of variance table,which of the following can be used to refer to "within-groups"?

Analysis of variance should be conducted only when

[(S²_Between)(df_Between)]/[(S²_Between)(df_Between)+ (S²_Within)(df_Within)] =

In a one-way analysis of variance,when sample sizes are equal,"(S²_M)(n)" is the formula for __________.(Do not give a symbol.)

The between-groups population variance estimate divided by the within-groups population variance estimate is called __________.

"S²_Within" equals

According to Cohen's conventions,an R² of .14 would represent a

The method used to make planned comparisons that involves dividing the total significance level by the number of comparisons to be made is the __________.

Displaying the Order in a Group of Numbers

Central Tendency and Variability

Some Key Ingredients for Inferential Statistics: Z Scores,the Normal Curve, Sample Versus Population, and Probability

Introduction to Hypothesis Testing

Hypothesis Tests With Means of Samples

Making Sense of Statistical Significance:decision Errors, Effect Size, and Statistical Power

Introduction to T Tests: Single Sample and Dependent Means

The T Test for Independent Means

Factorial Analysis of Variance

Correlation

Prediction

Chi-Square Tests

Strategies When Population Distributions Are Not Normal: Data Transformations and Rank-Order Tests

The General Linear Model and Making Sense of Advanced Statistical Procedures in Research Articles

Filters

Exam 9: Introduction to the Analysis of Variance

based on the following tables. -Advanced topic: At the .01 significance level,the null hypothesis __________.(Provide hypothesis testing decision.)

In research articles,post-hoc comparisons are often displayed in tables with __________ placed by the means to indicate whether the means are alike or different.

When sample sizes are equal,MSWithin is figured by

When carrying out an analysis of variance with equal sample sizes,the estimated variance of the distribution of means is converted to an estimated variance of the population of individual scores by

The overall test of the significance of the difference among groups in an analysis of variance is called

based on the following tables. -Advanced topic: R2 = __________.

"Proportion of variance accounted for" is also referred to as all of the following EXCEPT

based on the following tables. -Advanced topic: SSWithin = __________.(Give a number.)

Advanced topic: Σ(X-GM)2

If a study has 3 groups,each with 20 participants,and a one-way analysis of variance produced an F ratio of 6.21 that was significant at the .01 level,the results would be reported in a research article as __________.

In an analysis of variance with a within-groups variance estimate of 8.5 and a between-groups variance estimate of 5.3,the F ratio is

Advanced topic: In an analysis of variance table,which of the following can be used to refer to "within-groups"?

Analysis of variance should be conducted only when

[(S2Between)(dfBetween)]/[(S2Between)(dfBetween)+ (S2Within)(dfWithin)] =

In a one-way analysis of variance,when sample sizes are equal,"(S2M)(n)" is the formula for __________.(Do not give a symbol.)

The between-groups population variance estimate divided by the within-groups population variance estimate is called __________.

"S2Within" equals

According to Cohen's conventions,an R2 of .14 would represent a

The method used to make planned comparisons that involves dividing the total significance level by the number of comparisons to be made is the __________.

Displaying the Order in a Group of Numbers

Central Tendency and Variability

Some Key Ingredients for Inferential Statistics: Z Scores,the Normal Curve, Sample Versus Population, and Probability

Introduction to Hypothesis Testing

Hypothesis Tests With Means of Samples

Making Sense of Statistical Significance:decision Errors, Effect Size, and Statistical Power

Introduction to T Tests: Single Sample and Dependent Means

The T Test for Independent Means

Factorial Analysis of Variance

Correlation

Prediction

Chi-Square Tests

Strategies When Population Distributions Are Not Normal: Data Transformations and Rank-Order Tests

The General Linear Model and Making Sense of Advanced Statistical Procedures in Research Articles

Filters

When sample sizes are equal,MS_Within is figured by

based on the following tables. -Advanced topic: R² = __________.

based on the following tables. -Advanced topic: SS_Within = __________.(Give a number.)

Advanced topic: Σ(X-GM)²

[(S²_Between)(df_Between)]/[(S²_Between)(df_Between)+ (S²_Within)(df_Within)] =

In a one-way analysis of variance,when sample sizes are equal,"(S²_M)(n)" is the formula for __________.(Do not give a symbol.)

"S²_Within" equals

According to Cohen's conventions,an R² of .14 would represent a