Question 1

If the correlation coefficient r is equal to 0.66, find the coefficient of determination.

Accepted Answer

A) The coefficient of determination is 0.56. 
B) The coefficient of determination is 0.81. 
C) The coefficient of determination is 0.44. 
D) The coefficient of determination is 0.19. 
A) The coefficient of determination is 0.56. 
B) The coefficient of determination is 0.81. 
C) The coefficient of determination is 0.44. 
D) The coefficient of determination is 0.19. C

Question 2

__________ is a statistical method used to determine whether a relationship between variables exists.
________________________________________

Accepted Answer

Correlation

Question 3

If there is a strong negative linear relationship between the variables, the value of __________ will be
close to -1.
________________________________________

Accepted Answer

r

Question 4

If the correlation between two variables is computed to be 0.012, one can conclude that there is
essentially no relation between the two variables.

Accepted Answer

A) True 
 B)False

Question 5

A correlation coefficient r was calculated to be 0.61.The coefficient of determination would be
approximately __________.
________________________________________

Accepted Answer

The answer of A correlation coefficient r was calculated to...

Question 6

Test the significance of the correlation coefficient r at   for the data below.

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 7

An analysis results in a multiple regression equation of   We can conclude that

Accepted Answer

A) The variable x1 is a very significant factor in this model 
B) The variable x1 is a moderately significant factor in this model 
C) The variable x1 is not a significant factor in this model 
D) This is insufficient information to assess the significance of x1 
A) The variable x1 is a very significant factor in this model 
B) The variable x1 is a moderately significant factor in this model 
C) The variable x1 is not a significant factor in this model 
D) This is insufficient information to assess the significance of x1

Question 8

When r is not significantly different from 0, the best predictor of y is the mean of the __________ of
y.
________________________________________

Accepted Answer

The answer of When r is not significantly different from...

Question 9

In a multiple regression model   value changes by 2, then the predicted value for y will change by

Accepted Answer

A) 10 
B) 32 
C) 0 
D) 30 
A) 10 
B) 32 
C) 0 
D) 30

Question 10

Compute the correlation coefficient for the data below

Accepted Answer

A) 0.123 
B) 10.857 
A) 0.123 
B) 10.857

Question 11

The range of the correlation coefficient is from 0 to 1.

Accepted Answer

A) True 
 B)False

Question 12

Regression is a statistical method used to describe the nature of the relationship between variables.

Accepted Answer

A) True 
 B)False

Question 13

The standard error of estimate is the square root of the unexplained variation.

Accepted Answer

A) True 
 B)False

Question 14

If the equation for the regression line is y = 11x + 2, then a value of x = -3 will result in a predicted value for y of

Accepted Answer

A) 2 
B) 5 
C) -31 
D) 11 
A) 2 
B) 5 
C) -31 
D) 11

Question 15

A multiple regression line was calculated in which   was a student's grade point average and   was a student's age.The multiple regression line was calculated as   .If a student has a grade
Point average of 5.9 and is 20 years old, what is the predicted value of   ?

Accepted Answer

A) 387.2 
B) 400.1 
C) 421.6 
D) 615.5 
A) 387.2 
B) 400.1 
C) 421.6 
D) 615.5

Question 16

The following data list ages of cars (in years) and monthly repair cost (in dollars).What is the standard error of estimate?

Accepted Answer

A) 6.36 
B) 7.34 
C) 8.75 
D) 5.49 
A) 6.36 
B) 7.34 
C) 8.75 
D) 5.49

Question 17

Compute the correlation coefficient for the data below

Accepted Answer

A) 0.521 
B) 0.368 
C) -0.271 
D) -0.058 
A) 0.521 
B) 0.368 
C) -0.271 
D) -0.058

Question 18

The western city wishes to see if there is a relationship between the summer temperature and the amount
of electricity used (in kilowatts).  
-If a correlation coefficient calculated for n = 14 and   is found to be r = 0.856, what is the test value for the t - test?

Accepted Answer

A) 4.059 
B) 5.736 
C) 2.851 
D) 6.374 
A) 4.059 
B) 5.736 
C) 2.851 
D) 6.374

Question 19

Compute the intercept of the regression line for the data below.

Accepted Answer

A) 1.38 
B) 2.90 
C) 3.77 
D) 7.54 
A) 1.38 
B) 2.90 
C) 3.77 
D) 7.54

Question 20

A study was conducted to determine if there was a relationship between the prices a non-member of a club paid for various publications and the prices that a member paid for the same publications.The data
Gathered are shown below.What is the value of the correlation coefficient?

Accepted Answer

A) 0.762 
B) 0.857 
C) 0.679 
D) 0.932 
A) 0.762 
B) 0.857 
C) 0.679 
D) 0.932

If the correlation coefficient r is equal to 0.66, find the coefficient of determination.

is a statistical method used to determine whether a relationship between variables exists. ______________________________

If there is a strong negative linear relationship between the variables, the value of will be close to -1. ______________________________

If the correlation between two variables is computed to be 0.012, one can conclude that there is essentially no relation between the two variables.

A correlation coefficient r was calculated to be 0.61.The coefficient of determination would be approximately . ______________________________

Test the significance of the correlation coefficient r at for the data below.

An analysis results in a multiple regression equation of We can conclude that

When r is not significantly different from 0, the best predictor of y is the mean of the of y. ______________________________

In a multiple regression model value changes by 2, then the predicted value for y will change by

Compute the correlation coefficient for the data below

The range of the correlation coefficient is from 0 to 1.

Regression is a statistical method used to describe the nature of the relationship between variables.

The standard error of estimate is the square root of the unexplained variation.

If the equation for the regression line is y = 11x + 2, then a value of x = -3 will result in a predicted value for y of

A multiple regression line was calculated in which was a student's grade point average and was a student's age.The multiple regression line was calculated as .If a student has a grade Point average of 5.9 and is 20 years old, what is the predicted value of ?

The following data list ages of cars (in years) and monthly repair cost (in dollars).What is the standard error of estimate?

Compute the correlation coefficient for the data below

The western city wishes to see if there is a relationship between the summer temperature and the amount of electricity used (in kilowatts). -If a correlation coefficient calculated for n = 14 and is found to be r = 0.856, what is the test value for the t - test?

Compute the intercept of the regression line for the data below.

A study was conducted to determine if there was a relationship between the prices a non-member of a club paid for various publications and the prices that a member paid for the same publications.The data Gathered are shown below.What is the value of the correlation coefficient?

The Nature of Probability and Statistics

Frequency Distributions and Graphs

Data Description

Discrete Probability Distributions

The Normal Distribution

Confidence Intervals and Sample Size

Hypothesis Testing

Testing the Difference Between Two Means, Two Variances, and Two Proportions

Other Chi-Square Tests

Analysis of Variance

Nonparametric Statistics

Sampling and Simulation

Filters

Exam 10: Correlation and Regression

If the correlation coefficient r is equal to 0.66, find the coefficient of determination.

__________ is a statistical method used to determine whether a relationship between variables exists. ________________________________________

If there is a strong negative linear relationship between the variables, the value of __________ will be close to -1. ________________________________________

If the correlation between two variables is computed to be 0.012, one can conclude that there is essentially no relation between the two variables.

A correlation coefficient r was calculated to be 0.61.The coefficient of determination would be approximately __________. ________________________________________

Test the significance of the correlation coefficient r at for the data below.

An analysis results in a multiple regression equation of We can conclude that

When r is not significantly different from 0, the best predictor of y is the mean of the __________ of y. ________________________________________

In a multiple regression model value changes by 2, then the predicted value for y will change by

Compute the correlation coefficient for the data below

The range of the correlation coefficient is from 0 to 1.

Regression is a statistical method used to describe the nature of the relationship between variables.

The standard error of estimate is the square root of the unexplained variation.

If the equation for the regression line is y = 11x + 2, then a value of x = -3 will result in a predicted value for y of

A multiple regression line was calculated in which was a student's grade point average and was a student's age.The multiple regression line was calculated as .If a student has a grade Point average of 5.9 and is 20 years old, what is the predicted value of ?

The following data list ages of cars (in years) and monthly repair cost (in dollars).What is the standard error of estimate?

Compute the correlation coefficient for the data below

The western city wishes to see if there is a relationship between the summer temperature and the amount of electricity used (in kilowatts). -If a correlation coefficient calculated for n = 14 and is found to be r = 0.856, what is the test value for the t - test?

Compute the intercept of the regression line for the data below.

A study was conducted to determine if there was a relationship between the prices a non-member of a club paid for various publications and the prices that a member paid for the same publications.The data Gathered are shown below.What is the value of the correlation coefficient?

The Nature of Probability and Statistics

Frequency Distributions and Graphs

Data Description

Discrete Probability Distributions

The Normal Distribution

Confidence Intervals and Sample Size

Hypothesis Testing

Testing the Difference Between Two Means, Two Variances, and Two Proportions

Other Chi-Square Tests

Analysis of Variance

Nonparametric Statistics

Sampling and Simulation

Filters

is a statistical method used to determine whether a relationship between variables exists. ______________________________

If there is a strong negative linear relationship between the variables, the value of will be close to -1. ______________________________

A correlation coefficient r was calculated to be 0.61.The coefficient of determination would be approximately . ______________________________

When r is not significantly different from 0, the best predictor of y is the mean of the of y. ______________________________