Question 1

Standard error of estimate is computed as the variance of all values for error in prediction.

Accepted Answer

A) True 
 B)False

Question 2

Error in prediction (error of estimate) is calculated as the distance between each individual data point and the regression line.

Accepted Answer

A) True 
 B)False

Question 3

What important guideline should you keep in mind when choosing independent variables for multiple regression?

Accepted Answer

When using a multiple-regressi

Question 4

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

Accepted Answer

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

Question 5

Based on the formula for a regression line, what does a represent?

Accepted Answer

A) known value of X 
B) slope of a line 
C) y-intercept 
D) predictor score 
A) known value of X 
B) slope of a line 
C) y-intercept 
D) predictor score

Question 6

The higher the absolute value of the correlation coefficient, the less accurate the prediction is of one variable based on the other variable.

Accepted Answer

A) True 
 B)False

Question 7

The regression line reflects the best estimate of predicted scores for the independent variable based on levels of the dependent variable.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following is the point at which the regression line crosses the y-axis?

Accepted Answer

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

Question 9

In regression, the criterion variable is also known as the _______.

Accepted Answer

A) dependent variable 
B) independent variable 
C) predictor variable 
D) correlated variable 
A) dependent variable 
B) independent variable 
C) predictor variable 
D) correlated variable

Question 10

What is another name for a regression line?

Accepted Answer

A) line of best fit 
B) scatter plot line 
C) line graph 
D) line of the estimate 
A) line of best fit 
B) scatter plot line 
C) line graph 
D) line of the estimate

Question 11

Which of the following symbols is associated with the y-intercept 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 12

When using two predictor variables, these variables should be _______.

Accepted Answer

A) correlated 
B) related 
C) independent 
D) dependent 
A) correlated 
B) related 
C) independent 
D) dependent

Question 13

How is the regression line related to the correlation coefficient?

Accepted Answer

The regression line is a direc

Question 14

What statistical technique is used to make predictions of future outcomes based on present data?

Accepted Answer

A) analysis of variance 
B) repeated measures 
C) linear regression 
D) correlational analysis 
A) analysis of variance 
B) repeated measures 
C) linear regression 
D) correlational analysis

Question 15

When determining the number of predictor variables to use to predict a criterion variable, you need to keep all of the following guidelines in mind, except ______.

Accepted Answer

A) the unique contribution of each predictor 
B) the practical costs of adding new predictors 
C) the relationship between predictors and the criterion variable 
D) the length of the dialog box 
A) the unique contribution of each predictor 
B) the practical costs of adding new predictors 
C) the relationship between predictors and the criterion variable 
D) the length of the dialog box

Question 16

Which of the following is used to illustrate the "best guess" as to the predicted Y variable score based on X?

Accepted Answer

A) regression equation 
B) scatter plot 
C) standard error of the estimate 
D) regression line 
A) regression equation 
B) scatter plot 
C) standard error of the estimate 
D) regression line

Question 17

When computing a predicted value, your second step is to ______.

Accepted Answer

A) multiply the slope by the independent variable 
B) add the slope to the independent variable 
C) add the intercept, or a, to the value of step one 
D) subtract the constant 
A) multiply the slope by the independent variable 
B) add the slope to the independent variable 
C) add the intercept, or a, to the value of step one 
D) subtract the constant

Question 18

Which of the following is the correct formula for linear regression?

Accepted Answer

A) = aY + b 
B) = aX + b 
C) = bX + a 
D) = bY + a 
A) = aY + b 
B) = aX + b 
C) = bX + a 
D) = bY + a

Question 19

Why do we use and not Y in the regression equation?

Accepted Answer

We use because it is

Question 20

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

Accepted Answer

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

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

Standard error of estimate is computed as the variance of all values for error in prediction.

Error in prediction (error of estimate) is calculated as the distance between each individual data point and the regression line.

What important guideline should you keep in mind when choosing independent variables for multiple regression?

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

Based on the formula for a regression line, what does a represent?

The higher the absolute value of the correlation coefficient, the less accurate the prediction is of one variable based on the other variable.

The regression line reflects the best estimate of predicted scores for the independent variable based on levels of the dependent variable.

Which of the following is the point at which the regression line crosses the y-axis?

In regression, the criterion variable is also known as the _______.

What is another name for a regression line?

Which of the following symbols is associated with the y-intercept in the regression equation?

When using two predictor variables, these variables should be _______.

How is the regression line related to the correlation coefficient?

What statistical technique is used to make predictions of future outcomes based on present data?

When determining the number of predictor variables to use to predict a criterion variable, you need to keep all of the following guidelines in mind, except ______.

Which of the following is used to illustrate the "best guess" as to the predicted Y variable score based on X?

When computing a predicted value, your second step is to ______.

Which of the following is the correct formula for linear regression?

Why do we use and not Y in the regression equation?

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

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