Question 1

The multiple regression equation may be reported once the ______.

Accepted Answer

A)  regression coefficients have been calculated 
B)  Y-intercept has been calculated 
C)  slope has been determined 
D)  regression coefficient and the Y-intercept have been calculated 
A)  regression coefficients have been calculated 
B)  Y-intercept has been calculated 
C)  slope has been determined 
D)  regression coefficient and the Y-intercept have been calculated

Question 2

Correlation involves measuring the relationship between variables.

Accepted Answer

A) True 
 B)False

Question 3

If there is zero correlation between two variables, the linear regression equation based on this correlation is a ______ line.

Accepted Answer

A)  vertical 
B)  horizontal 
C)  curved 
D)  dotted 
A)  vertical 
B)  horizontal 
C)  curved 
D)  dotted

Question 4

The following regression equation: Y′ = 2.15 + .49(X). In this example, .49 refers to the slope of the equation.

Accepted Answer

A) True 
 B)False

Question 5

For α = .01 and df = 3, 20, the critical value for the F-ratio would be ______.

Accepted Answer

A)  3.10 
B)  4.94 
C)  5.85 
D)  8.66 
A)  3.10 
B)  4.94 
C)  5.85 
D)  8.66

Question 6

Use the following information for Questions 
  
-Calculate the F.

Accepted Answer

The answer of Use the following information for Questions 
...

Question 7

For data that yielded an intercept of 7.54 and a slope of .64, what would be the appropriate linear regression equation?

Accepted Answer

A)  7.54 = a + .64 (X) 
B)  7.54 = a + b (.64) 
C)  Y'= 7.54 + b (.64) 
D)  Y' = 7.54 + .64 (X) 
A)  7.54 = a + .64 (X) 
B)  7.54 = a + b (.64) 
C)  Y'= 7.54 + b (.64) 
D)  Y' = 7.54 + .64 (X)

Question 8

Use Table for Questions 
  
-Calculate the Y-Intercept.

Accepted Answer

The answer of Use Table for Questions 
  
-Calculate...

Question 9

The F-ratio is used to test the significance by transforming R.

Accepted Answer

A) True 
 B)False

Question 10

Use Table for Questions 
  
-Calculate the slope of
b.

Accepted Answer

The answer of Use Table for Questions 
  
-Calculate...

Question 11

A researcher studying the relationship between people's perceptions of police on their feelings of safety in their neighborhood develops the following regression equation: Y' = 2.14 + .69(X). In this example, X refers to ______.

Accepted Answer

A)  the Y-intercept 
B)  the slope of the equation 
C)  feelings of safety 
D)  perceptions of police 
A)  the Y-intercept 
B)  the slope of the equation 
C)  feelings of safety 
D)  perceptions of police

Question 12

In a sample of 60 students, the combination of household income and high school GPA predicting college GPA had an R = .45, F(2, 57) = 7.34, the researcher would ______.

Accepted Answer

A) not reject the null hypothesis (p > .05) B) not reject the null hypothesis (p .05) D) reject the null hypothesis (p <.05) A) not reject the null hypothesis (p > .05) B) not reject the null hypothesis (p .05) D) reject the null hypothesis (p <.05)

Question 13

Multiple correlation provides researchers the ability to ______.

Accepted Answer

A)  test a variety of effects 
B)  accurately support the alternative hypothesis 
C)  provide assurance of significant results 
D)  easily calculate results 
A)  test a variety of effects 
B)  accurately support the alternative hypothesis 
C)  provide assurance of significant results 
D)  easily calculate results

Question 14

Calculate the Y-intercept from the following data.
b1 = 0.35; b2 = 0.79   = 20.50;   = 7.45;   = 10.75

Accepted Answer

Question 15

Which of these scatterplots is most likely to result in the regression equation Y' = 2.25 - .45(X)?   Figure A   Figure B   Figure C   Figure D

Accepted Answer

A)  Figure A 
B)  Figure B 
C)  Figure C 
D)  Figure D 
A)  Figure A 
B)  Figure B 
C)  Figure C 
D)  Figure D

Question 16

A researcher studying the relationship between the number of hours students spend studying and their score on an exam calculates the following regression equation: Y' = 4.07 + .21(X). In this example, .21 refers to ______.

Accepted Answer

A)  the Y-intercept 
B)  the slope of the equation 
C)  exam scores 
D)  the number of hours spent studying 
A)  the Y-intercept 
B)  the slope of the equation 
C)  exam scores 
D)  the number of hours spent studying

Question 17

If you were to develop a linear regression equation that predicts the number of victimizations from age, what would be the Y-intercept (a) of the regression equation?   Pearson r = .41

Accepted Answer

A)  -166.86 
B)  -3.39 
C)  3.27 
D)  -.29 
A)  -166.86 
B)  -3.39 
C)  3.27 
D)  -.29

Question 18

Including multiple predictors in one analysis ______.

Accepted Answer

A)  guarantees significant results 
B)  is less accurate than using only one predictor 
C)  offers no real research advantage 
D)  should increase the amount of explained variance in the criterion 
A)  guarantees significant results 
B)  is less accurate than using only one predictor 
C)  offers no real research advantage 
D)  should increase the amount of explained variance in the criterion

Question 19

Correlation differs from regression in that ______.

Accepted Answer

A)  correlation predicts one variable from another 
B)  correlation compares the means of groups 
C)  regression predicts one variable from another 
D)  regression compares the means of groups 
A)  correlation predicts one variable from another 
B)  correlation compares the means of groups 
C)  regression predicts one variable from another 
D)  regression compares the means of groups

Question 20

Use the following information for Questions 
  
-Calculate the R.

Accepted Answer

The answer of Use the following information for Questions 
...

The multiple regression equation may be reported once the ______.

Correlation involves measuring the relationship between variables.

If there is zero correlation between two variables, the linear regression equation based on this correlation is a ______ line.

The following regression equation: Y′ = 2.15 + .49(X). In this example, .49 refers to the slope of the equation.

For α = .01 and df = 3, 20, the critical value for the F-ratio would be ______.

Use the following information for Questions -Calculate the F.

For data that yielded an intercept of 7.54 and a slope of .64, what would be the appropriate linear regression equation?

Use Table for Questions -Calculate the Y-Intercept.

The F-ratio is used to test the significance by transforming R.

Use Table for Questions -Calculate the slope of b.

A researcher studying the relationship between people's perceptions of police on their feelings of safety in their neighborhood develops the following regression equation: Y' = 2.14 + .69(X). In this example, X refers to ______.

In a sample of 60 students, the combination of household income and high school GPA predicting college GPA had an R = .45, F(2, 57) = 7.34, the researcher would ______.

Multiple correlation provides researchers the ability to ______.

Calculate the Y-intercept from the following data. b₁ = 0.35; b₂ = 0.79 = 20.50; = 7.45; = 10.75

Which of these scatterplots is most likely to result in the regression equation Y' = 2.25 - .45(X)? Figure A Figure B Figure C Figure D

A researcher studying the relationship between the number of hours students spend studying and their score on an exam calculates the following regression equation: Y' = 4.07 + .21(X). In this example, .21 refers to ______.

If you were to develop a linear regression equation that predicts the number of victimizations from age, what would be the Y-intercept (a) of the regression equation? Pearson r = .41

Including multiple predictors in one analysis ______.

Correlation differs from regression in that ______.

Use the following information for Questions -Calculate the R.

Introduction to Statistics

Examining Data: Tables and Figures

Measures of Central Tendency

Measures of Variability

Normal Distributions

Probability and Hypothesis Testing

Testing One Sample Mean

Estimating the Mean of a Population

Testing the Difference Between Two Means

Errors in Hypothesis Testing, Statistical Power, and Effect Size

One-Way Analysis of Variance Anova

Two-Way Analysis of Variance Anova

Correlation

Chi-Square

Filters

Exam 14: Linear Regression and Multiple Correlation

The multiple regression equation may be reported once the ______.

Correlation involves measuring the relationship between variables.

If there is zero correlation between two variables, the linear regression equation based on this correlation is a ______ line.

The following regression equation: Y′ = 2.15 + .49(X). In this example, .49 refers to the slope of the equation.

For α = .01 and df = 3, 20, the critical value for the F-ratio would be ______.

Use the following information for Questions -Calculate the F.

For data that yielded an intercept of 7.54 and a slope of .64, what would be the appropriate linear regression equation?

Use Table for Questions -Calculate the Y-Intercept.

The F-ratio is used to test the significance by transforming R.

Use Table for Questions -Calculate the slope of b.

A researcher studying the relationship between people's perceptions of police on their feelings of safety in their neighborhood develops the following regression equation: Y' = 2.14 + .69(X). In this example, X refers to ______.

In a sample of 60 students, the combination of household income and high school GPA predicting college GPA had an R = .45, F(2, 57) = 7.34, the researcher would ______.

Multiple correlation provides researchers the ability to ______.

Calculate the Y-intercept from the following data. b1 = 0.35; b2 = 0.79 = 20.50; = 7.45; = 10.75

Which of these scatterplots is most likely to result in the regression equation Y' = 2.25 - .45(X)? Figure A Figure B Figure C Figure D

A researcher studying the relationship between the number of hours students spend studying and their score on an exam calculates the following regression equation: Y' = 4.07 + .21(X). In this example, .21 refers to ______.

If you were to develop a linear regression equation that predicts the number of victimizations from age, what would be the Y-intercept (a) of the regression equation? Pearson r = .41

Including multiple predictors in one analysis ______.

Correlation differs from regression in that ______.

Use the following information for Questions -Calculate the R.

Introduction to Statistics

Examining Data: Tables and Figures

Measures of Central Tendency

Measures of Variability

Normal Distributions

Probability and Hypothesis Testing

Testing One Sample Mean

Estimating the Mean of a Population

Testing the Difference Between Two Means

Errors in Hypothesis Testing, Statistical Power, and Effect Size

One-Way Analysis of Variance Anova

Two-Way Analysis of Variance Anova

Correlation

Chi-Square

Filters

Calculate the Y-intercept from the following data. b₁ = 0.35; b₂ = 0.79 = 20.50; = 7.45; = 10.75