Find whether the given statement is true or false.

Question

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Answer 1

Question

Chapter 7, Problem 1E

a.

To determine

Find whether the given statement is true or false.

a.

Expert Solution

Answer to Problem 1E

The given statement is false.

Explanation of Solution

Given info:

The linear model, which passes through the most data points on the scatterplot, is chosen.

Justification:

If the line passes through the most data points on the then that line won’t be straight line. To be straight, the line needs to touch some of the points or none of the points, but it minimizes the sum of least squares.

Thus, the given statement is false.

Statistics Concept Introduction

The conditions for a scatterplot that is well fitted for the data are,

Straight line Condition: The relationship between y and x should be straight enough to proceed with a linear regression model.
Outlier Condition: No outlier must be there which influences the fit of the least square line.
Thickness Condition: The spread of the data around the generally straight relationship seem to be consistent for all values of predictor variable.

b.

To determine

Find whether the given statement is true or false.

b.

Expert Solution

Answer to Problem 1E

The given statement is true.

Explanation of Solution

Given info:

The residuals are the observed y-values minus the predicted y-values by the linear model.

Justification:

The residual gives the difference between the observed value of the response variable and that of the predicted value.

Thus, the given statement is true.

Statistics Concept Introduction

Residual:

The residual is defined as Residual = Observed value − Predicted value or e=y−y^ where y^ be the predicted value of the response variable and y be the actual value of the response variable.

c.

To determine

Find whether the given statement is true or false.

c.

Expert Solution

Answer to Problem 1E

The given statement is false.

Explanation of Solution

Given info:

Least square defines the square of the largest residual is as small as it could possibly be.

Justification:

A least square criterion defines the unique line that minimizes the variance of residuals or sum of squared of the residuals. It does not imply to minimize the largest residual is as small as it could possibly be.

Thus, the given statement is false.

Statistics Concept Introduction

Least-square criterion:

The least-square criterion is of a regression line that the best fits of a set of data points having the smallest possible sum of squares.

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Answer 2

Question

Chapter 7, Problem 1E

a.

To determine

Find whether the given statement is true or false.

a.

Expert Solution

Answer to Problem 1E

The given statement is false.

Explanation of Solution

Given info:

The linear model, which passes through the most data points on the scatterplot, is chosen.

Justification:

If the line passes through the most data points on the then that line won’t be straight line. To be straight, the line needs to touch some of the points or none of the points, but it minimizes the sum of least squares.

Thus, the given statement is false.

Statistics Concept Introduction

The conditions for a scatterplot that is well fitted for the data are,

Straight line Condition: The relationship between y and x should be straight enough to proceed with a linear regression model.
Outlier Condition: No outlier must be there which influences the fit of the least square line.
Thickness Condition: The spread of the data around the generally straight relationship seem to be consistent for all values of predictor variable.

b.

To determine

Find whether the given statement is true or false.

b.

Expert Solution

Answer to Problem 1E

The given statement is true.

Explanation of Solution

Given info:

The residuals are the observed y-values minus the predicted y-values by the linear model.

Justification:

The residual gives the difference between the observed value of the response variable and that of the predicted value.

Thus, the given statement is true.

Statistics Concept Introduction

Residual:

The residual is defined as Residual = Observed value − Predicted value or e=y−y^ where y^ be the predicted value of the response variable and y be the actual value of the response variable.

c.

To determine

Find whether the given statement is true or false.

c.

Expert Solution

Answer to Problem 1E

The given statement is false.

Explanation of Solution

Given info:

Least square defines the square of the largest residual is as small as it could possibly be.

Justification:

A least square criterion defines the unique line that minimizes the variance of residuals or sum of squared of the residuals. It does not imply to minimize the largest residual is as small as it could possibly be.

Thus, the given statement is false.

Statistics Concept Introduction

Least-square criterion:

The least-square criterion is of a regression line that the best fits of a set of data points having the smallest possible sum of squares.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 3

Question

Chapter 7, Problem 1E

a.

To determine

Find whether the given statement is true or false.

a.

Expert Solution

Answer to Problem 1E

The given statement is false.

Explanation of Solution

Given info:

The linear model, which passes through the most data points on the scatterplot, is chosen.

Justification:

If the line passes through the most data points on the then that line won’t be straight line. To be straight, the line needs to touch some of the points or none of the points, but it minimizes the sum of least squares.

Thus, the given statement is false.

Statistics Concept Introduction

The conditions for a scatterplot that is well fitted for the data are,

Straight line Condition: The relationship between y and x should be straight enough to proceed with a linear regression model.
Outlier Condition: No outlier must be there which influences the fit of the least square line.
Thickness Condition: The spread of the data around the generally straight relationship seem to be consistent for all values of predictor variable.

b.

To determine

Find whether the given statement is true or false.

b.

Expert Solution

Answer to Problem 1E

The given statement is true.

Explanation of Solution

Given info:

The residuals are the observed y-values minus the predicted y-values by the linear model.

Justification:

The residual gives the difference between the observed value of the response variable and that of the predicted value.

Thus, the given statement is true.

Statistics Concept Introduction

Residual:

The residual is defined as Residual = Observed value − Predicted value or e=y−y^ where y^ be the predicted value of the response variable and y be the actual value of the response variable.

c.

To determine

Find whether the given statement is true or false.

c.

Expert Solution

Answer to Problem 1E

The given statement is false.

Explanation of Solution

Given info:

Least square defines the square of the largest residual is as small as it could possibly be.

Justification:

A least square criterion defines the unique line that minimizes the variance of residuals or sum of squared of the residuals. It does not imply to minimize the largest residual is as small as it could possibly be.

Thus, the given statement is false.

Statistics Concept Introduction

Least-square criterion:

The least-square criterion is of a regression line that the best fits of a set of data points having the smallest possible sum of squares.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Question

Chapter 7, Problem 1E

a.

To determine

Find whether the given statement is true or false.

a.

Expert Solution

Answer to Problem 1E

The given statement is false.

Explanation of Solution

Given info:

The linear model, which passes through the most data points on the scatterplot, is chosen.

Justification:

If the line passes through the most data points on the then that line won’t be straight line. To be straight, the line needs to touch some of the points or none of the points, but it minimizes the sum of least squares.

Thus, the given statement is false.

Statistics Concept Introduction

The conditions for a scatterplot that is well fitted for the data are,

Straight line Condition: The relationship between y and x should be straight enough to proceed with a linear regression model.
Outlier Condition: No outlier must be there which influences the fit of the least square line.
Thickness Condition: The spread of the data around the generally straight relationship seem to be consistent for all values of predictor variable.

b.

To determine

Find whether the given statement is true or false.

b.

Expert Solution

Answer to Problem 1E

The given statement is true.

Explanation of Solution

Given info:

The residuals are the observed y-values minus the predicted y-values by the linear model.

Justification:

The residual gives the difference between the observed value of the response variable and that of the predicted value.

Thus, the given statement is true.

Statistics Concept Introduction

Residual:

The residual is defined as Residual = Observed value − Predicted value or e=y−y^ where y^ be the predicted value of the response variable and y be the actual value of the response variable.

c.

To determine

Find whether the given statement is true or false.

c.

Expert Solution

Answer to Problem 1E

The given statement is false.

Explanation of Solution

Given info:

Least square defines the square of the largest residual is as small as it could possibly be.

Justification:

A least square criterion defines the unique line that minimizes the variance of residuals or sum of squared of the residuals. It does not imply to minimize the largest residual is as small as it could possibly be.

Thus, the given statement is false.

Statistics Concept Introduction

Least-square criterion:

The least-square criterion is of a regression line that the best fits of a set of data points having the smallest possible sum of squares.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Chapter 7, Problem 1E

a.

To determine

Find whether the given statement is true or false.

a.

Expert Solution

Answer to Problem 1E

The given statement is false.

Explanation of Solution

Given info:

The linear model, which passes through the most data points on the scatterplot, is chosen.

Justification:

If the line passes through the most data points on the then that line won’t be straight line. To be straight, the line needs to touch some of the points or none of the points, but it minimizes the sum of least squares.

Thus, the given statement is false.

Statistics Concept Introduction

The conditions for a scatterplot that is well fitted for the data are,

Straight line Condition: The relationship between y and x should be straight enough to proceed with a linear regression model.
Outlier Condition: No outlier must be there which influences the fit of the least square line.
Thickness Condition: The spread of the data around the generally straight relationship seem to be consistent for all values of predictor variable.

b.

To determine

Find whether the given statement is true or false.

b.

Expert Solution

Answer to Problem 1E

The given statement is true.

Explanation of Solution

Given info:

The residuals are the observed y-values minus the predicted y-values by the linear model.

Justification:

The residual gives the difference between the observed value of the response variable and that of the predicted value.

Thus, the given statement is true.

Statistics Concept Introduction

Residual:

The residual is defined as Residual = Observed value − Predicted value or e=y−y^ where y^ be the predicted value of the response variable and y be the actual value of the response variable.

c.

To determine

Find whether the given statement is true or false.

c.

Expert Solution

Answer to Problem 1E

The given statement is false.

Explanation of Solution

Given info:

Least square defines the square of the largest residual is as small as it could possibly be.

Justification:

A least square criterion defines the unique line that minimizes the variance of residuals or sum of squared of the residuals. It does not imply to minimize the largest residual is as small as it could possibly be.

Thus, the given statement is false.

Statistics Concept Introduction

Least-square criterion:

The least-square criterion is of a regression line that the best fits of a set of data points having the smallest possible sum of squares.

Answer 6

Chapter 7, Problem 1E

a.

To determine

Find whether the given statement is true or false.

a.

Expert Solution

Answer to Problem 1E

The given statement is false.

Explanation of Solution

Given info:

The linear model, which passes through the most data points on the scatterplot, is chosen.

Justification:

If the line passes through the most data points on the then that line won’t be straight line. To be straight, the line needs to touch some of the points or none of the points, but it minimizes the sum of least squares.

Thus, the given statement is false.

Statistics Concept Introduction

The conditions for a scatterplot that is well fitted for the data are,

Straight line Condition: The relationship between y and x should be straight enough to proceed with a linear regression model.
Outlier Condition: No outlier must be there which influences the fit of the least square line.
Thickness Condition: The spread of the data around the generally straight relationship seem to be consistent for all values of predictor variable.

Answer 7

Chapter 7, Problem 1E

a.

To determine

Find whether the given statement is true or false.

Answer 8

a.

Expert Solution

Answer to Problem 1E

The given statement is false.

Answer 9

a.

Expert Solution

Answer 10

a.

Expert Solution

Answer 11

Expert Solution

Answer 12

Explanation of Solution

Given info:

The linear model, which passes through the most data points on the scatterplot, is chosen.

Justification:

If the line passes through the most data points on the then that line won’t be straight line. To be straight, the line needs to touch some of the points or none of the points, but it minimizes the sum of least squares.

Thus, the given statement is false.

Answer 13

Statistics Concept Introduction

The conditions for a scatterplot that is well fitted for the data are,

Straight line Condition: The relationship between y and x should be straight enough to proceed with a linear regression model.
Outlier Condition: No outlier must be there which influences the fit of the least square line.
Thickness Condition: The spread of the data around the generally straight relationship seem to be consistent for all values of predictor variable.

Answer 14

b.

To determine

Find whether the given statement is true or false.

b.

Expert Solution

Answer to Problem 1E

The given statement is true.

Explanation of Solution

Given info:

The residuals are the observed y-values minus the predicted y-values by the linear model.

Justification:

The residual gives the difference between the observed value of the response variable and that of the predicted value.

Thus, the given statement is true.

Statistics Concept Introduction

Residual:

The residual is defined as Residual = Observed value − Predicted value or e=y−y^ where y^ be the predicted value of the response variable and y be the actual value of the response variable.

Answer 15

b.

To determine

Find whether the given statement is true or false.

Answer 16

b.

Expert Solution

Answer to Problem 1E

The given statement is true.

Answer 17

b.

Expert Solution

Answer 18

b.

Expert Solution

Answer 19

Expert Solution

Answer 20

Explanation of Solution

Given info:

The residuals are the observed y-values minus the predicted y-values by the linear model.

Justification:

The residual gives the difference between the observed value of the response variable and that of the predicted value.

Thus, the given statement is true.

Answer 21

Statistics Concept Introduction

Residual:

The residual is defined as Residual = Observed value − Predicted value or e=y−y^ where y^ be the predicted value of the response variable and y be the actual value of the response variable.

Answer 22

c.

To determine

Find whether the given statement is true or false.

c.

Expert Solution

Answer to Problem 1E

The given statement is false.

Explanation of Solution

Given info:

Least square defines the square of the largest residual is as small as it could possibly be.

Justification:

A least square criterion defines the unique line that minimizes the variance of residuals or sum of squared of the residuals. It does not imply to minimize the largest residual is as small as it could possibly be.

Thus, the given statement is false.

Statistics Concept Introduction

Least-square criterion:

The least-square criterion is of a regression line that the best fits of a set of data points having the smallest possible sum of squares.

Answer 23

c.

To determine

Find whether the given statement is true or false.

Answer 24

c.

Expert Solution

Answer to Problem 1E

The given statement is false.

Answer 25

c.

Expert Solution

Answer 26

c.

Expert Solution

Answer 27

Expert Solution

Answer 28

Explanation of Solution

Given info:

Least square defines the square of the largest residual is as small as it could possibly be.

Justification:

A least square criterion defines the unique line that minimizes the variance of residuals or sum of squared of the residuals. It does not imply to minimize the largest residual is as small as it could possibly be.

Thus, the given statement is false.