Question 1

When I want to make a prediction but don't have the value of X on which to base that prediction, my best estimate is

Accepted Answer

A)  the value that I calculate with a regression equation. 
B)  the smallest value of Y. 
C)  the mean of Y . 
D)  There is no good prediction. 
A)  the value that I calculate with a regression equation. 
B)  the smallest value of Y. 
C)  the mean of Y . 
D)  There is no good prediction.

Question 2

If the association between warm parenting practices and self-esteem is .50, then 75% of the variability in self-esteem is independent of warm parenting practices.

Accepted Answer

A) True 
 B)False

Question 3

When we have considerable spread of the points about the regression line, the slope of that line will be _______ the slope of a similar line when there is less scatter.

Accepted Answer

A)  less than 
B)  more than 
C)  the same as 
D)  more extreme than 
A)  less than 
B)  more than 
C)  the same as 
D)  more extreme than

Question 4

In the equation for a straight line used in the text, the intercept is represented by

Accepted Answer

A)  a 
B)  b 
C)  X 
D)  Y 
A)  a 
B)  b 
C)  X 
D)  Y

Question 5

If data with only one predictor variable were standardized, the slope would equal

Accepted Answer

A)  r 
B)  b 
C)  a 
D)  Ŷ 
A)  r 
B)  b 
C)  a 
D)  Ŷ

Question 6

Given the data in the previous table: 
a. What is the slope of the regression line? 
b. What does the value of the slope mean here? 
c. Is the slope significantly different from 0?

Accepted Answer

a. 5.116 
b. For every 1 point

Question 7

If you drop a pencil randomly on a scatterplot, what aspect are you changing as you move the pencil vertically on the page without rotating it?

Accepted Answer

A)  the slope. 
B)  the intercept. 
C)  the correlation. 
D)  the residual. 
A)  the slope. 
B)  the intercept. 
C)  the correlation. 
D)  the residual.

Question 8

Write a sentence interpreting the regression data in the following table. 
   
Dependent variable: Child Behavior Problem Score

Accepted Answer

The more angry a mother thinks

Question 9

If we have a regression line predicting the amount of improvement in your performance as a function of the amount of tutoring you receive, an intercept of 12 would mean that

Accepted Answer

A)  you need to have 12 hours of tutoring to get an A. 
B)  if you don't have any tutoring, the best you can do is a grade of 12. 
C)  even without tutoring you will improve. 
D)  tutoring helps. 
A)  you need to have 12 hours of tutoring to get an A. 
B)  if you don't have any tutoring, the best you can do is a grade of 12. 
C)  even without tutoring you will improve. 
D)  tutoring helps.

Question 10

When one refers to the degree that variable A changes as variable B changes they are referring to

Accepted Answer

A)  variance. 
B)  regression. 
C)  covariance. 
D)  habituation. 
A)  variance. 
B)  regression. 
C)  covariance. 
D)  habituation.

Question 11

Given the following values, calculate the regression equation.

Accepted Answer

Mileage^~ =

Question 12

A significant slope means that

Accepted Answer

A)  the slope is positive. 
B)  there is a significant relationship between X and Y in the population. 
C)  the slope is not equal to 0 in the population. 
D)  both b and c 
A)  the slope is positive. 
B)  there is a significant relationship between X and Y in the population. 
C)  the slope is not equal to 0 in the population. 
D)  both b and c

Question 13

Residual refers to the error of prediction.

Accepted Answer

A) True 
 B)False

Question 14

If the correlation between X and Y is significant, that tells us

Accepted Answer

A)  that the slope is significant. 
B)  that the intercept is significant. 
C)  that X causes Y. 
D)  nothing about the regression equation. 
A)  that the slope is significant. 
B)  that the intercept is significant. 
C)  that X causes Y. 
D)  nothing about the regression equation.

Question 15

-Calculate the residuals for the previous data. Explain how you did it.

Accepted Answer

The calcul

Question 16

Briefly describe the difference between the standardized beta coefficient and the unstandardized b

Accepted Answer

The standardized beta allows u

Question 17

Using a regression equation to predict a value will always lead to highly accurate predictions.

Accepted Answer

A) True 
 B)False

Question 18

When the slope of the regression line is positive, the line goes from

Accepted Answer

A)  upper left to lower right. 
B)  lower left to upper right. 
C)  the line is flat. 
D)  It depends on the intercept. 
A)  upper left to lower right. 
B)  lower left to upper right. 
C)  the line is flat. 
D)  It depends on the intercept.

Question 19

The notation Y - Ŷ is referred to as

Accepted Answer

A)  error. 
B)  deviation. 
C)  residual. 
D)  all of the above 
A)  error. 
B)  deviation. 
C)  residual. 
D)  all of the above

Question 20

If you drop a pencil randomly on a scatterplot, what aspect are you changing as you rotate the pencil about the point where it crosses the Y axis?

Accepted Answer

A)  the slope. 
B)  the intercept. 
C)  the correlation. 
D)  the residual. 
A)  the slope. 
B)  the intercept. 
C)  the correlation. 
D)  the residual.

Exam 10: Regression

When I want to make a prediction but don't have the value of X on which to base that prediction, my best estimate is

If the association between warm parenting practices and self-esteem is .50, then 75% of the variability in self-esteem is independent of warm parenting practices.

When we have considerable spread of the points about the regression line, the slope of that line will be _______ the slope of a similar line when there is less scatter.

In the equation for a straight line used in the text, the intercept is represented by

If data with only one predictor variable were standardized, the slope would equal

Given the data in the previous table: a. What is the slope of the regression line? b. What does the value of the slope mean here? c. Is the slope significantly different from 0?

If you drop a pencil randomly on a scatterplot, what aspect are you changing as you move the pencil vertically on the page without rotating it?

Write a sentence interpreting the regression data in the following table. Dependent variable: Child Behavior Problem Score

If we have a regression line predicting the amount of improvement in your performance as a function of the amount of tutoring you receive, an intercept of 12 would mean that

When one refers to the degree that variable A changes as variable B changes they are referring to

Given the following values, calculate the regression equation.

A significant slope means that

Residual refers to the error of prediction.

If the correlation between X and Y is significant, that tells us

-Calculate the residuals for the previous data. Explain how you did it.

Briefly describe the difference between the standardized beta coefficient and the unstandardized b

Using a regression equation to predict a value will always lead to highly accurate predictions.

When the slope of the regression line is positive, the line goes from

The notation Y - Ŷ is referred to as

If you drop a pencil randomly on a scatterplot, what aspect are you changing as you rotate the pencil about the point where it crosses the Y axis?

Introduction

Basic Concepts

Displaying Data

Measures of Central Tendency

Measures of Variability

The Normal Distribution

Basic Concepts of Probability

Sampling Distributions and Hypothesis Testing

Correlation

Multiple Regression

Hypothesis Tests Applied to Means: One Sample

Hypothesis Tests Applied to Means: Two Related Samples

Hypothesis Tests Applied to Means: Two Independent Samples

Power

One-Way Analysis of Variance

Factorial Analysis of Variance

Repeated-Measures Analysis of Variance

Chi-Square

Nonparametric and Resampling Statistical Tests

Meta-Analysis

Filters