Use the following data to answer the Questions: . Let x = time spent studying and y = test score. \[\begin{array} { l r r r r r r r r r r r r } \text { Time spent } & 1 & 2 & 5 & 4 & 6 & 7 & 8 & 5 & 2 & 4 & 3 & 5 \\ \text { studying(hours) } & & & & & & & & & & & & \\ \text { Test score } & 49 & 57 & 80 & 70 & 88 & 91 & 98 & 80 & 57 & 72 & 65 & 82 \\ \text { (percentage) } & & & & & & & & & & & & \end{array}\] -Choice -What is the slope of the regression line?

A) about 2 B) about 7 C) about 43 D) None of the above. A) about 2 B) about 7 C) about 43 D) None of the above.

Use the following Table to answer the Questions: \(\begin{array} { | l | c | c | c | c | c | c | c | } \hline \begin{array} { l } \text { Hours spent } \\ \text { partying per } \\ \text { week } ( x ) \end{array} & 10 & 40 & 0 & 5 & 60 & 20 & 12 \\ \hline \text { GPA } ( y ) & 3.4 & 0.5 & 3.9 & 3.7 & 4.0 & 1.3 & 3.1 \\ \hline \end{array}\) -What is the correlation for these data?

The answer of Use the following Table to answer the...

Use the following data set to answer the Questions: \(\begin{array} { | l | l | l | l | l | l | l | l | l } \hline \begin{array} { l } \text { Length of } \\ \text { commute in } \\ \text { miles } ( x ) \end{array} & 2 & 10 & 8 & 30 & 12 & 70 & 15 & 20 \\ \hline \begin{array} { l } \text { Time of } \\ \text { commute in } \\ \text { minutes (y) } \end{array} & 5 & 25 & 20 & 45 & 25 & 80 & 30 & 35 \\ \hline \end{array}\) -What is the slope of the regression line?

A) 0.9 B) 1.0 C) 1.1 D) 1.5 A) 0.9 B) 1.0 C) 1.1 D) 1.5

Use the following data set to answer the Questions: \(\begin{array} { | l | l | l | l | l | l | l | l | l } \hline \begin{array} { l } \text { Length of } \\ \text { commute in } \\ \text { miles } ( x ) \end{array} & 2 & 10 & 8 & 30 & 12 & 70 & 15 & 20 \\ \hline \begin{array} { l } \text { Time of } \\ \text { commute in } \\ \text { minutes (y) } \end{array} & 5 & 25 & 20 & 45 & 25 & 80 & 30 & 35 \\ \hline \end{array}\) -What is the actual length of a 0-mile commute?

A) 0 B) 10 C) 12 D) 20 A) 0 B) 10 C) 12 D) 20

Consider the data set below. \[\begin{array} { | l l |l l |} \hline x & 1 & 2 & 3 \\ \hline y & 7 & 6 & 5 \end{array}\] Adding the data point (3, 6) to this data set:

A) changes the correlation. B) changes the slope of the regression line. C) Both A and B are correct. D) Neither A nor B is correct. A) changes the correlation. B) changes the slope of the regression line. C) Both A and B are correct. D) Neither A nor B is correct.

Exam 6: Exploring Data: Relationships

Use the following data to answer the Questions: . Let x = time spent studying and y = test score. Time spent 1 2 5 4 6 7 8 5 2 4 3 5 studying(hours) Test score 49 57 80 70 88 91 98 80 57 72 65 82 (percentage) -Choice -What is the slope of the regression line?

(Multiple Choice)

4.8/5

(28)

Question 81

Use the following scatterplot to answer the Questions: -For the scatterplot shown above, what can you say about the correlation?

(Multiple Choice)

4.7/5

(24)

Question 82

What can you say about the slope of a regression line for variables that are negatively associated?

(Short Answer)

4.8/5

(28)

Question 83

If the x and y coordinates of a scatterplot are exchanged, variables that were previously positively associated:

(Multiple Choice)

5.0/5

(37)

Question 84

If all the points of a scatterplot lie on a straight line, what can you say about the correlation of the data?

(Short Answer)

4.8/5

(43)

Question 85

Use the following Table to answer the Questions: Hours spent partying per week (x) 10 40 0 5 60 20 12 GPA (y) 3.4 0.5 3.9 3.7 4.0 1.3 3.1 -What is the correlation for these data?

(Essay)

4.9/5

(33)

Question 86

To choose advertising media, a marketing analyst studies the relationship between a consumer's income and the amount spent on restaurant dining. Which variable, consumer's income or dining expenditures, would be the response variable for a least-squares regression equation?

(Multiple Choice)

4.9/5

(38)

Question 87

The least-squares regression equation y = 50 + 0.1x gives the yield in bushels per acre of corn when x pounds of fertilizer are applied. Predict the yield for a farmer who plans to use 320 pounds of fertilizer.

(Multiple Choice)

4.9/5

(31)

Question 88

If the x and y coordinates of a scatterplot are exchanged, the slope of the regression line:

(Multiple Choice)

4.8/5

(42)

Question 89

Suppose the equation for a regression line is y = 18 − 3x. If x = 4, what is the predicted corresponding value for y?

(Short Answer)

4.8/5

(28)

Question 90

To determine the effectiveness of group study sessions, a college instructor gathers data on hours of attendance and exam scores for students in the class. Which variable, hours of attendance or exam scores, would be the response variable for a least-squares regression equation?

(Multiple Choice)

4.8/5

(40)

Question 91

If the x and y coordinates of a scatterplot are exchanged, the correlation of the variables:

(Multiple Choice)

4.8/5

(32)

Question 92

For professional baseball players, one would expect a negative correlation between:

(Multiple Choice)

4.8/5

(39)

Question 93

Use the following data set to answer the Questions: Length of commute in miles (x) 2 10 8 30 12 70 15 20 Time of commute in minutes (y) 5 25 20 45 25 80 30 35 -What is the slope of the regression line?

(Multiple Choice)

4.8/5

(30)

Question 94

Use the following data set to answer the Questions: Length of commute in miles (x) 2 10 8 30 12 70 15 20 Time of commute in minutes (y) 5 25 20 45 25 80 30 35 -What is the actual length of a 0-mile commute?

(Multiple Choice)

4.9/5

(27)

Question 95

If the correlation between two variables is −1, then the points of their scatterplot:

(Multiple Choice)

4.7/5

(44)

Question 96

Use the following scatterplot to answer the Questions: -What can you say about the correlation?

(Multiple Choice)

4.7/5

(39)

Question 97

Suppose that ages and hours of time slept per day are gathered from people at a mall. According to these data, young children and older adults tend to sleep more than older children and younger adults. How could you describe the resulting scatterplot of this data, where x represents ages and y represents the amount of sleep per day?

(Essay)

4.8/5

(31)

Question 98

If the points of a scatterplot lie on a straight line, then the correlation:

(Multiple Choice)

4.8/5

(35)

Question 99

Consider the data set below. x 1 2 3 y 7 6 5 Adding the data point (3, 6) to this data set:

(Multiple Choice)

4.9/5

(34)

Question 100

Exam 6: Exploring Data: Relationships

Use the following data to answer the Questions: . Let x = time spent studying and y = test score. Time spent 1 2 5 4 6 7 8 5 2 4 3 5 studying(hours) Test score 49 57 80 70 88 91 98 80 57 72 65 82 (percentage) -Choice -What is the slope of the regression line?

Use the following scatterplot to answer the Questions: -For the scatterplot shown above, what can you say about the correlation?

What can you say about the slope of a regression line for variables that are negatively associated?

If the x and y coordinates of a scatterplot are exchanged, variables that were previously positively associated:

If all the points of a scatterplot lie on a straight line, what can you say about the correlation of the data?

Use the following Table to answer the Questions: Hours spent partying per week (x) 10 40 0 5 60 20 12 GPA (y) 3.4 0.5 3.9 3.7 4.0 1.3 3.1 -What is the correlation for these data?

To choose advertising media, a marketing analyst studies the relationship between a consumer's income and the amount spent on restaurant dining. Which variable, consumer's income or dining expenditures, would be the response variable for a least-squares regression equation?

The least-squares regression equation y = 50 + 0.1x gives the yield in bushels per acre of corn when x pounds of fertilizer are applied. Predict the yield for a farmer who plans to use 320 pounds of fertilizer.

If the x and y coordinates of a scatterplot are exchanged, the slope of the regression line:

Suppose the equation for a regression line is y = 18 − 3x. If x = 4, what is the predicted corresponding value for y?

To determine the effectiveness of group study sessions, a college instructor gathers data on hours of attendance and exam scores for students in the class. Which variable, hours of attendance or exam scores, would be the response variable for a least-squares regression equation?

If the x and y coordinates of a scatterplot are exchanged, the correlation of the variables:

For professional baseball players, one would expect a negative correlation between:

Use the following data set to answer the Questions: Length of commute in miles (x) 2 10 8 30 12 70 15 20 Time of commute in minutes (y) 5 25 20 45 25 80 30 35 -What is the slope of the regression line?

Use the following data set to answer the Questions: Length of commute in miles (x) 2 10 8 30 12 70 15 20 Time of commute in minutes (y) 5 25 20 45 25 80 30 35 -What is the actual length of a 0-mile commute?

If the correlation between two variables is −1, then the points of their scatterplot:

Use the following scatterplot to answer the Questions: -What can you say about the correlation?

If the points of a scatterplot lie on a straight line, then the correlation:

Consider the data set below. x 1 2 3 y 7 6 5 Adding the data point (3, 6) to this data set:

Urban Services

Business Efficiency

Planning and Scheduling

Linear Programming

Exploring Data: Distributions

Data for Decisions

Probability: the Mathematics of Chance

Social Choice: the Impossible Dream

The Manipulability of Voting Systems

Weighted Voting Systems

Electing the President

Fair Division

Apportionment

Game Theory: the Mathematics of Competition

Identification Numbers

Information Science

Growth and Form

Symmetry and Patterns

Tilings

Savings Models

Borrowing Models

The Economics of Resources

Filters