Question 1

ANOVA is only useful when comparing two means.

Accepted Answer

A) True 
 B)False  False

Question 2

How does ANOVA improve upon t-tests?

Accepted Answer

ANOVA improves upon t-tests by allowing simultaneous comparisons across more than two groups. A t-test could be used to make multiple comparisons, but this would be cumbersome, prone to cumulative errors, and inconclusive.

Question 3

Use the table below to answer questions :
Number of Years Respondent Worked across Employers
  
-What is the value of eta2?

Accepted Answer

A)  .2 
B)  .43 
C)  .54 
D)  .72 
A)  .2 
B)  .43 
C)  .54 
D)  .72 C

Question 4

Eta2 should be used when the independent variable is categorical and the dependent variable is -----------.

Accepted Answer

A)  nominal 
B)  ordinal 
C)  categorical 
D)  interval/ratio 
A)  nominal 
B)  ordinal 
C)  categorical 
D)  interval/ratio

Question 5

Use the table below to answer questions :
Number of Years Respondent Worked across Employers
  
-What is the value of the f-ratio?

Accepted Answer

A)  1.06 
B)  3.52 
C)  9.23 
D)  14.88 
A)  1.06 
B)  3.52 
C)  9.23 
D)  14.88

Question 6

Use the table below to answer the following questions:
    
a.Determine the number of degrees of freedom between groups.
b.Determine the number of degrees of freedom among the subgroups.
c.What is the value of thetotal sum of squares (SST)?
d.What is the value of the within-group sum of squares (SSW)?
e.What is the value of the between-group sum of squares (SSB)?
f.What is the value of the mean square between populations?
g.What is the value of the mean square within populations?
h.What is the value of the f-ratio?
i.Is there a statistically significant difference among the means of these groups?
j.What is the value of Eta2?
k.oes Eta2 offer any evidence that attitudes areassociated with region? Explain.

Accepted Answer

a.3
b.8
c.58.25
d.20
e.38.25
f.12.75
g.2

Question 7

When should ANOVA be used?

Accepted Answer

ANOVA should be used when comparing mean

Question 8

What is the strength of the association represented by an eta2 of .87?

Accepted Answer

A)  weak 
B)  moderate 
C)  strong 
D)  the measure does not reflect strength 
A)  weak 
B)  moderate 
C)  strong 
D)  the measure does not reflect strength

Question 9

Eta2 should be used when the independent variable is interval/ratio and the dependent variable is categorical.

Accepted Answer

A) True 
 B)False

Question 10

Within-group sum of squares is the amount of variation that exists for all cases in a sample relative to their sub-group means.

Accepted Answer

A) True 
 B)False

Question 11

Use the table below to answer questions :
Number of Years Respondent Worked across Employers
  
-What is the value of the mean square between populations?

Accepted Answer

A)  7.44 
B)  8.67 
C)  14.88 
D)  22.61 
A)  7.44 
B)  8.67 
C)  14.88 
D)  22.61

Question 12

Use the table below to answer questions :
  
-What is the value of the f-ratio?

Accepted Answer

A)  .001 
B)  .229 
C)  .293 
D)  67.08 
A)  .001 
B)  .229 
C)  .293 
D)  67.08

Question 13

Use the table below to answer questions :
Number of Years Respondent Worked across Employers
  
-What is the value of the within-group sum of squares (SSW)?

Accepted Answer

A)  8.67 
B)  12.67 
C)  22.61 
D)  32.14 
A)  8.67 
B)  12.67 
C)  22.61 
D)  32.14

Question 14

Use the table below to answer questions :
  
-Are the differences across categories statistically significant?

Accepted Answer

A)  no 
B)  yes 
C)  there is not enough information to determine 
A)  no 
B)  yes 
C)  there is not enough information to determine

Question 15

Use the table below to answer questions :
Number of Years Respondent Worked across Employers
  
-Determine the number of degrees of freedom among the subgroups.

Accepted Answer

A)  2 
B)  3 
C)  6 
D)  12 
A)  2 
B)  3 
C)  6 
D)  12

Question 16

If the sum of squares between is equal to 20 and the sum of squares within is equal to 10, what is the value of eta2?

Accepted Answer

A)  .2 
B)  .46 
C)  .67 
D)  1.5 
A)  .2 
B)  .46 
C)  .67 
D)  1.5

Question 17

Within-group sum of squares is the amount of variation that exists for all cases in a sample relative to the overall mean.

Accepted Answer

A) True 
 B)False

Question 18

If the sum of squares between is equal to 7 and the sum of squares within is equal to 3, what is the value of eta2?

Accepted Answer

A)  .2 
B)  .43 
C)  .70 
D)  1.4 
A)  .2 
B)  .43 
C)  .70 
D)  1.4

Question 19

Use the table below to answer questions :
  
-What is the value of the f-ratio?

Accepted Answer

A)  .02 
B)  .27 
C)  98.05 
D)  273.59 
A)  .02 
B)  .27 
C)  98.05 
D)  273.59

Question 20

Use the table below to answer questions :
Number of Years Respondent Worked across Employers
  
-What is the value of the mean square within populations?

Accepted Answer

A)  2.11 
B)  7.44 
C)  14.88 
D)  22.61 
A)  2.11 
B)  7.44 
C)  14.88 
D)  22.61

ANOVA is only useful when comparing two means.

How does ANOVA improve upon t-tests?

Use the table below to answer questions : Number of Years Respondent Worked across Employers -What is the value of eta²?

Eta² should be used when the independent variable is categorical and the dependent variable is -----------.

Use the table below to answer questions : Number of Years Respondent Worked across Employers -What is the value of the f-ratio?

When should ANOVA be used?

What is the strength of the association represented by an eta² of .87?

Eta² should be used when the independent variable is interval/ratio and the dependent variable is categorical.

Within-group sum of squares is the amount of variation that exists for all cases in a sample relative to their sub-group means.

Use the table below to answer questions : Number of Years Respondent Worked across Employers -What is the value of the mean square between populations?

Use the table below to answer questions : -What is the value of the f-ratio?

Use the table below to answer questions : Number of Years Respondent Worked across Employers -What is the value of the within-group sum of squares (SSW)?

Use the table below to answer questions : -Are the differences across categories statistically significant?

Use the table below to answer questions : Number of Years Respondent Worked across Employers -Determine the number of degrees of freedom among the subgroups.

If the sum of squares between is equal to 20 and the sum of squares within is equal to 10, what is the value of eta²?

Within-group sum of squares is the amount of variation that exists for all cases in a sample relative to the overall mean.

If the sum of squares between is equal to 7 and the sum of squares within is equal to 3, what is the value of eta²?

Use the table below to answer questions : -What is the value of the f-ratio?

Use the table below to answer questions : Number of Years Respondent Worked across Employers -What is the value of the mean square within populations?

Concepts, Variables, and Measurement

Frequency Tables

Measures of Central Tendency

Measures of Dispersion

Probability and the Normal Curve

Probabilityfrom Samples to Statistics

Cross-Tabulation Tables and Chi-Square

Measures of Association for Categorical Variables

Correlation and Regression

Filters

Exam 9: Analysis of Variance

ANOVA is only useful when comparing two means.

How does ANOVA improve upon t-tests?

Use the table below to answer questions : Number of Years Respondent Worked across Employers -What is the value of eta2?

Eta2 should be used when the independent variable is categorical and the dependent variable is -----------.

Use the table below to answer questions : Number of Years Respondent Worked across Employers -What is the value of the f-ratio?

When should ANOVA be used?

What is the strength of the association represented by an eta2 of .87?

Eta2 should be used when the independent variable is interval/ratio and the dependent variable is categorical.

Within-group sum of squares is the amount of variation that exists for all cases in a sample relative to their sub-group means.

Use the table below to answer questions : Number of Years Respondent Worked across Employers -What is the value of the mean square between populations?

Use the table below to answer questions : -What is the value of the f-ratio?

Use the table below to answer questions : Number of Years Respondent Worked across Employers -What is the value of the within-group sum of squares (SSW)?

Use the table below to answer questions : -Are the differences across categories statistically significant?

Use the table below to answer questions : Number of Years Respondent Worked across Employers -Determine the number of degrees of freedom among the subgroups.

If the sum of squares between is equal to 20 and the sum of squares within is equal to 10, what is the value of eta2?

Within-group sum of squares is the amount of variation that exists for all cases in a sample relative to the overall mean.

If the sum of squares between is equal to 7 and the sum of squares within is equal to 3, what is the value of eta2?

Use the table below to answer questions : -What is the value of the f-ratio?

Use the table below to answer questions : Number of Years Respondent Worked across Employers -What is the value of the mean square within populations?

Concepts, Variables, and Measurement

Frequency Tables

Measures of Central Tendency

Measures of Dispersion

Probability and the Normal Curve

Probabilityfrom Samples to Statistics

Cross-Tabulation Tables and Chi-Square

Measures of Association for Categorical Variables

Correlation and Regression

Filters

Use the table below to answer questions : Number of Years Respondent Worked across Employers -What is the value of eta²?

Eta² should be used when the independent variable is categorical and the dependent variable is -----------.

What is the strength of the association represented by an eta² of .87?

Eta² should be used when the independent variable is interval/ratio and the dependent variable is categorical.

If the sum of squares between is equal to 20 and the sum of squares within is equal to 10, what is the value of eta²?

If the sum of squares between is equal to 7 and the sum of squares within is equal to 3, what is the value of eta²?