Question 1

A regression equation can be visually represented on a(n) _______.

Accepted Answer

A) histogram 
B) scatter plot 
C) ogive 
D) pie chart 
A) histogram 
B) scatter plot 
C) ogive 
D) pie chart B

Question 2

Which of the following is also known as a regression weight?

Accepted Answer

A) X 
B)  $$Y ^ { \prime }$$ 
C) a 
D) b 
A) X 
B)  $$Y ^ { \prime }$$ 
C) a 
D) b D

Question 3

If you are trying to predict Y scores from X scores, X is referred to as the ______.

Accepted Answer

A) nominal variable 
B) independent variable 
C) dependent variable 
D) criterion variable 
A) nominal variable 
B) independent variable 
C) dependent variable 
D) criterion variable B

Question 4

Linear regression uses correlations between variables as the basis for the prediction of the value of one variable based on the value of another.

Accepted Answer

A) True 
 B)False

Question 5

How would you represent the predicted score of Y based on a known value of X?

Accepted Answer

A) y 
B) y-intercept 
C)  $$Y ^ { \prime }$$ 
D) Y = Xa 
A) y 
B) y-intercept 
C)  $$Y ^ { \prime }$$ 
D) Y = Xa

Question 6

A criterion variable is also known as a(n) ______.

Accepted Answer

A) independent variable 
B) dependent variable 
C) nominal variable 
D) categorical variable 
A) independent variable 
B) dependent variable 
C) nominal variable 
D) categorical variable

Question 7

If you are trying to predict Y scores from X scores, Y is referred to as the ______.

Accepted Answer

A) nominal variable 
B) dependent variable 
C) predictor variable 
D) criterion variable 
A) nominal variable 
B) dependent variable 
C) predictor variable 
D) criterion variable

Question 8

Which of the following determines the direction of the regression line?

Accepted Answer

A) intercept 
B) predicted score 
C) criterion score 
D) slope 
A) intercept 
B) predicted score 
C) criterion score 
D) slope

Question 9

Which of the following symbols is associated with the independent variable in the regression equation?

Accepted Answer

A) X 
B)  $$Y ^ { \prime }$$ 
C) a 
D) b 
A) X 
B)  $$Y ^ { \prime }$$ 
C) a 
D) b

Question 10

Using the regression formula with a slope = 2,000 and an intercept = 15,000, what would the predicted income be for someone who has 25 years of education?

Accepted Answer

A) $40,000 
B) $42,000 
C) $45,000 
D) $65,000 
A) $40,000 
B) $42,000 
C) $45,000 
D) $65,000

Question 11

What must be done to categorical variables in order to use them in a regression analysis?

Accepted Answer

A) nothing 
B) dummy coding 
C) problem coding 
D) categorical coding 
A) nothing 
B) dummy coding 
C) problem coding 
D) categorical coding

Question 12

Using the regression formula with a slope = .504 and an intercept = .719, what would the predicted college GPA be for a student whose current high school GPA = 3.2?

Accepted Answer

A) 2.69 
B) 2.33 
C) 3.00 
D) 3.20 
A) 2.69 
B) 2.33 
C) 3.00 
D) 3.20

Question 13

To predict one variable from another, you must first ______.

Accepted Answer

A) compute the mean 
B) compute the standard deviation 
C) compute the correlation 
D) compute the variance 
A) compute the mean 
B) compute the standard deviation 
C) compute the correlation 
D) compute the variance

Question 14

What is the distance between each data point and the regression line called?

Accepted Answer

A) error in prediction 
B) standard error of the estimate 
C) standard deviation 
D) standardized error 
A) error in prediction 
B) standard error of the estimate 
C) standard deviation 
D) standardized error

Question 15

In linear regression, a regression equation is determined, which can be used to plot a regression line.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following symbols is associated with the slope in the regression equation?

Accepted Answer

A) X 
B)  $$Y ^ { \prime }$$ 
C) a 
D) b 
A) X 
B)  $$Y ^ { \prime }$$ 
C) a 
D) b

Question 17

Using the regression formula with a slope = 2,000 and an intercept = 15,000, what would the predicted income be for someone who has 16 years of education?

Accepted Answer

A) $40,000 
B) $42,000 
C) $45,000 
D) $47,000 
A) $40,000 
B) $42,000 
C) $45,000 
D) $47,000

Question 18

What can be used as the basis for prediction?

Accepted Answer

A) t-test 
B) correlation 
C) F-test 
D) Cohen's d 
A) t-test 
B) correlation 
C) F-test 
D) Cohen's d

Question 19

In the multiple-regression formula, what does X₂ represent?

Accepted Answer

A) value of the second dependent variable 
B) value of the second independent variable 
C) value of the criterion variable 
D) value of the predicted score 
A) value of the second dependent variable 
B) value of the second independent variable 
C) value of the criterion variable 
D) value of the predicted score

Question 20

Using the regression formula with a slope = 2,000 and an intercept = 15,000, what would the predicted income be for someone who has 35 years of education?

Accepted Answer

A) $40,000 
B) $42,000 
C) $45,000 
D) $85,000 
A) $40,000 
B) $42,000 
C) $45,000 
D) $85,000

Exam 16: Predicting Wholl Win the Super Bowl: Using Linear Regression

A regression equation can be visually represented on a(n) _______.

Which of the following is also known as a regression weight?

If you are trying to predict Y scores from X scores, X is referred to as the ______.

Linear regression uses correlations between variables as the basis for the prediction of the value of one variable based on the value of another.

How would you represent the predicted score of Y based on a known value of X?

A criterion variable is also known as a(n) ______.

If you are trying to predict Y scores from X scores, Y is referred to as the ______.

Which of the following determines the direction of the regression line?

Which of the following symbols is associated with the independent variable in the regression equation?

Using the regression formula with a slope = 2,000 and an intercept = 15,000, what would the predicted income be for someone who has 25 years of education?

What must be done to categorical variables in order to use them in a regression analysis?

Using the regression formula with a slope = .504 and an intercept = .719, what would the predicted college GPA be for a student whose current high school GPA = 3.2?

To predict one variable from another, you must first ______.

What is the distance between each data point and the regression line called?

In linear regression, a regression equation is determined, which can be used to plot a regression line.

Which of the following symbols is associated with the slope in the regression equation?

Using the regression formula with a slope = 2,000 and an intercept = 15,000, what would the predicted income be for someone who has 16 years of education?

What can be used as the basis for prediction?

In the multiple-regression formula, what does X₂ represent?

Using the regression formula with a slope = 2,000 and an intercept = 15,000, what would the predicted income be for someone who has 35 years of education?

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