Question 1

When reading a scatterplot, the independent variable defines the

Accepted Answer

A)  diagonal axis 
B)  horizontal axis 
C)  regression line 
D)  vertical axis 
A)  diagonal axis 
B)  horizontal axis 
C)  regression line 
D)  vertical axis

Question 2

An analyst is interested in the relationship between number of cups of coffee consumed before an exam (the independent variable) and exam grade (the dependent variable). She regresses exam GRADE on number of CUPS of coffee. The equation for the best-fitting straight line is
GRADE = 90 − 10(CUPS)
A) One student had six cups of coffee. What was that student's predicted grade?
B) If one student had no coffee and received a grade of 95, what was that student's regression residual?
C) Does the best fitting straight line through the scatterplot rise or fall as it moves to the right? (rise or fall)

Accepted Answer

The answer of An analyst is interested in the relationship...

Question 3

Based on the regression equation Y = 200 + 50X, which of the following is true?

Accepted Answer

A)  The regression line crosses the Y axis at 50. 
B)  The regression line rises as it moves to the right. 
C)  Cases with a value on X of 10 would be predicted to have a score of 260 on Y. 
D)  Cases with a value on X of 0 would be predicted to have a score of 250 on Y. 
A)  The regression line crosses the Y axis at 50. 
B)  The regression line rises as it moves to the right. 
C)  Cases with a value on X of 10 would be predicted to have a score of 260 on Y. 
D)  Cases with a value on X of 0 would be predicted to have a score of 250 on Y.

Question 4

Answer the questions that follow this SPSS output:

A) What is the value of the multiple correlation? __________
B) If one person is five years older than another person, how much more income would we predict the older person gets? __________
C) Write out the regression equation. You may use Y and X or the names of the variables.

Accepted Answer

a. .323
b. $6,068.24

Question 5

If the value of the multiple correlation is .80, what is the value of the coefficient of determination? __________

Accepted Answer

The answer of If the value of the multiple correlation...

Question 6

What kinds of questions can you answer using bivariate regression?

Accepted Answer

Changing a case's value on the independe

Question 7

GPA is regressed on YEAR in college. The resulting regression equation is GPA = 1.75 + .25(YEAR). Someone in their fourth year of college would be predicted to have a GPA _____ than someone in their first year of college.

Accepted Answer

A)  2.00 lower 
B)  0.25 lower 
C)  0.75 higher 
D)  1.50 higher 
A)  2.00 lower 
B)  0.25 lower 
C)  0.75 higher 
D)  1.50 higher

Question 8

Answer the questions that follow this SPSS output: 
 
A) What is the value of Pearson's correlation for the relationship between SIBLINGS and MAEDUC? __________
B) Which pair of variables has the weakest correlation in the table? __________ and __________

Accepted Answer

a. −.313
b

When reading a scatterplot, the independent variable defines the

Based on the regression equation Y = 200 + 50X, which of the following is true?

If the value of the multiple correlation is .80, what is the value of the coefficient of determination? __________

What kinds of questions can you answer using bivariate regression?

GPA is regressed on YEAR in college. The resulting regression equation is GPA = 1.75 + .25(YEAR). Someone in their fourth year of college would be predicted to have a GPA _____ than someone in their first year of college.

Answer the questions that follow this SPSS output: A) What is the value of Pearson's correlation for the relationship between SIBLINGS and MAEDUC? B) Which pair of variables has the weakest correlation in the table? and __

Introduction

Data Sets

Frequency Tables and Univariate Charts

Central Tendency and Dispersion

Creating New Variables

Comparing Group Means

Crosstab Tables

Nominal and Ordinal Measures of Association

Multiple Regression

Sampling Distributions and Normal Distributions

Hypothesis Testing and One-Sample T Tests

Paired and Independent-Samples T Tests

Analysis of Variance

Chi-Square

Hypothesis Testing With Measures of Association and Regression

Filters

Exam 9: Pearsons Correlation and Bivariate Regression

When reading a scatterplot, the independent variable defines the

Based on the regression equation Y = 200 + 50X, which of the following is true?

If the value of the multiple correlation is .80, what is the value of the coefficient of determination? __________

What kinds of questions can you answer using bivariate regression?

GPA is regressed on YEAR in college. The resulting regression equation is GPA = 1.75 + .25(YEAR). Someone in their fourth year of college would be predicted to have a GPA _____ than someone in their first year of college.

Answer the questions that follow this SPSS output: A) What is the value of Pearson's correlation for the relationship between SIBLINGS and MAEDUC? __________ B) Which pair of variables has the weakest correlation in the table? __________ and __________

Introduction

Data Sets

Frequency Tables and Univariate Charts

Central Tendency and Dispersion

Creating New Variables

Comparing Group Means

Crosstab Tables

Nominal and Ordinal Measures of Association

Multiple Regression

Sampling Distributions and Normal Distributions

Hypothesis Testing and One-Sample T Tests

Paired and Independent-Samples T Tests

Analysis of Variance

Chi-Square

Hypothesis Testing With Measures of Association and Regression

Filters

Answer the questions that follow this SPSS output: A) What is the value of Pearson's correlation for the relationship between SIBLINGS and MAEDUC? B) Which pair of variables has the weakest correlation in the table? and __