Question 1

In regression analysis, Y is generally considered the __________ variable.

Accepted Answer

dependent

Question 2

The difference between the observed points and the regression line points is equal to:

Accepted Answer

A) the correlation. 
B) the slope. 
C) the error term.
D )the Y-intercept. 
A) the correlation. 
B) the slope. 
C) the error term.
D )the Y-intercept. C

Question 3

The question below refers to the following situation:
The table below contains the Earned Run Averages (ERA) and team victories for the American Baseball League during a recent season. ERA is the number of earned runs (runs resulting from the other team hitting the ball, not because of errors in the field) a team gives up per 9 innings. The lower the ERA, the better for the team. A low ERA is usually an indication of good pitching, good defense, or both. Given the data below:   
Calculate and interpret the coefficient of determination.

Accepted Answer

.567. 56.7% of the variation in team wins is determined or explained by team ERA.

Question 4

An underlying assumption of regression is that both variables are measured at the __________ level.

Accepted Answer

The answer of An underlying assumption of regression is that...

Question 5

The square of Pearson's r (r2) is known as the:

Accepted Answer

A) square root. 
B) coefficinet of nondetermination. 
C) coefficient of determination. 
D) sl ope. 
A) square root. 
B) coefficinet of nondetermination. 
C) coefficient of determination. 
D) sl ope.

Question 6

If the regression line is drawn accurately, the location where it crosses the Y axis is known As:

Accepted Answer

A) the Y-intercept. 
B) the slope. 
C) the X-intercept. 
D) t he pivot point. 
A) the Y-intercept. 
B) the slope. 
C) the X-intercept. 
D) t he pivot point.

Question 7

If the coefficient of determination = .8, then the coefficient of nondetermination =__________.

Accepted Answer

The answer of If the coefficient of determination = .8,...

Question 8

To test the significance of the regression line, one must assume __________for both variables or else have a large sample.

Accepted Answer

The answer of To test the significance of the regression...

Question 9

Which of the following is NOT a component of the regression equation?

Accepted Answer

A) Y-intercept 
B) slope 
C) error 
D) st andard deviation 
A) Y-intercept 
B) slope 
C) error 
D) st andard deviation

Question 10

Sample members must be chosen __________ to employ tests of significance.

Accepted Answer

The answer of Sample members must be chosen __________ to...

Question 11

The coefficient of determination explains:

Accepted Answer

A) the proportion of variance in Y that is determined or explained by X. 
B) the proportion of variance in Y that is NOT determined or explained by X. 
C) the proportion of variance in Y that is attributed to error.
D )the proportion of variance in X that is attributed to error. 
A) the proportion of variance in Y that is determined or explained by X. 
B) the proportion of variance in Y that is NOT determined or explained by X. 
C) the proportion of variance in Y that is attributed to error.
D )the proportion of variance in X that is attributed to error.

Question 12

The question below refers to the following situation:
A researcher is interested in the relationship between age and the number of hours spent per week playing video games. Her data are as follows:   
What is the Y-intercept?

Accepted Answer

The answer of The question below refers to the following...

Question 13

The question below refers to the following situation:
The table below contains the Earned Run Averages (ERA) and team victories for the American Baseball League during a recent season. ERA is the number of earned runs (runs resulting from the other team hitting the ball, not because of errors in the field) a team gives up per 9 innings. The lower the ERA, the better for the team. A low ERA is usually an indication of good pitching, good defense, or both. Given the data below:   
Make a prediction for the number of wins a team would have with an ERA of 4.50.

Accepted Answer

The answer of The question below refers to the following...

Question 14

When the points in a scatter plot cluster closely around the regression line, the correlation Can be said to be:

Accepted Answer

A) weak. 
B) strong. 
C) neutral. 
D) negat ive. 
A) weak. 
B) strong. 
C) neutral. 
D) negat ive.

Question 15

The question below refers to the following situation:
A researcher is interested in the relationship between age and the number of hours spent per week playing video games. Her data are as follows:   
Calculate the coefficient of determination.

Accepted Answer

The answer of The question below refers to the following...

Question 16

__________ equations are frequently used to project the impact of the independent variable (X) beyond its range in the sample.

Accepted Answer

The answer of __________ equations are frequently used to project...

Question 17

The question below refers to the following situation:
The table below contains the Earned Run Averages (ERA) and team victories for the American Baseball League during a recent season. ERA is the number of earned runs (runs resulting from the other team hitting the ball, not because of errors in the field) a team gives up per 9 innings. The lower the ERA, the better for the team. A low ERA is usually an indication of good pitching, good defense, or both. Given the data below:   
Calculate and interpret the coefficient of non-determination.

Accepted Answer

.433. 43.3% of the variation i

Question 18

In the regression equation, the symbol for the slope is __________.

Accepted Answer

The answer of In the regression equation, the symbol for...

Question 19

Regression generally assumes a __________ line relationship

Accepted Answer

The answer of Regression generally assumes a __________ line relationship...

Question 20

=

Accepted Answer

A) Poisson's r 
B) Pearson's r 
C) Cramer's V 
D) Go odman's gamma 
A) Poisson's r 
B) Pearson's r 
C) Cramer's V 
D) Go odman's gamma

In regression analysis, Y is generally considered the __________ variable.

The difference between the observed points and the regression line points is equal to:

An underlying assumption of regression is that both variables are measured at the __________ level.

The square of Pearson's r (r2) is known as the:

If the regression line is drawn accurately, the location where it crosses the Y axis is known As:

If the coefficient of determination = .8, then the coefficient of nondetermination =__________.

To test the significance of the regression line, one must assume __________for both variables or else have a large sample.

Which of the following is NOT a component of the regression equation?

Sample members must be chosen __________ to employ tests of significance.

The coefficient of determination explains:

The question below refers to the following situation: A researcher is interested in the relationship between age and the number of hours spent per week playing video games. Her data are as follows: What is the Y-intercept?

When the points in a scatter plot cluster closely around the regression line, the correlation Can be said to be:

The question below refers to the following situation: A researcher is interested in the relationship between age and the number of hours spent per week playing video games. Her data are as follows: Calculate the coefficient of determination.

__________ equations are frequently used to project the impact of the independent variable (X) beyond its range in the sample.

In the regression equation, the symbol for the slope is __________.

Regression generally assumes a __________ line relationship

=

Why the Social Researcher Uses Statistics

Organizing the Data

Measures of Central Tendency

Measures of Variability

Probability and the Normal Curve

Samples and Populations

Testing Differences Between Means

Analysis of Variance

Nonparametric Tests of Significance

Correlation

Nonparametric Measures of Correlation

Choosing Statistical Procedures for Research Problems

Filters

Exam 11: Regression Analysis

In regression analysis, Y is generally considered the __________ variable.

The difference between the observed points and the regression line points is equal to:

An underlying assumption of regression is that both variables are measured at the __________ level.

The square of Pearson's r (r2) is known as the:

If the regression line is drawn accurately, the location where it crosses the Y axis is known As:

If the coefficient of determination = .8, then the coefficient of nondetermination =__________.

To test the significance of the regression line, one must assume __________for both variables or else have a large sample.

Which of the following is NOT a component of the regression equation?

Sample members must be chosen __________ to employ tests of significance.

The coefficient of determination explains:

The question below refers to the following situation: A researcher is interested in the relationship between age and the number of hours spent per week playing video games. Her data are as follows: What is the Y-intercept?

When the points in a scatter plot cluster closely around the regression line, the correlation Can be said to be:

The question below refers to the following situation: A researcher is interested in the relationship between age and the number of hours spent per week playing video games. Her data are as follows: Calculate the coefficient of determination.

__________ equations are frequently used to project the impact of the independent variable (X) beyond its range in the sample.

In the regression equation, the symbol for the slope is __________.

Regression generally assumes a __________ line relationship

=

Why the Social Researcher Uses Statistics

Organizing the Data

Measures of Central Tendency

Measures of Variability

Probability and the Normal Curve

Samples and Populations

Testing Differences Between Means

Analysis of Variance

Nonparametric Tests of Significance

Correlation

Nonparametric Measures of Correlation

Choosing Statistical Procedures for Research Problems

Filters