Construct a scatter diagram . Explain the relationship between the variables. Check whether the relation is direct or indirect and also check whether the relation is weak or strong.

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Please could you explain why 0.5 was added to each upper limpit of the intervals.Thanks

Answer 1

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Compare Compare Correlation is the measure of the degree of the relationship between the variables. In regression, the relationship between the variables to predict one by another is assessed. In correlation there is no cause and effect between the variables, whereas in regression there is a cause and effect between the variables. By using correlation, we cannot predict anything, but regression is a predictive tool. Coefficients are symmetrical in correlation but in regression they are asymmetrical. Correlation is independent of change in origin and scale, but regression is not independent of change in scale.

Chapter 13, Problem 64DA

a.

To determine

Construct a scatter diagram.

Explain the relationship between the variables.

Check whether the relation is direct or indirect and also check whether the relation is weak or strong.

b.

To determine

Find the regression equation.

Find the amount that an additional year is added to the maintenance cost.

Find the estimated maintenance cost for a 10-year-old bus.

c.

To determine

Check whether the slope of the regression line is positive or not.

Interpret the findings from Parts (a),(b), and (c).

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Please could you explain why 0.5 was added to each upper limpit of the intervals.Thanks

28. (a) Under what conditions do we say that two random variables X and Y are independent? (b) Demonstrate that if X and Y are independent, then it follows that E(XY) = E(X)E(Y); (e) Show by a counter example that the converse of (ii) is not necessarily true.

1. Let X and Y be random variables and suppose that A = F. Prove that Z XI(A)+YI(A) is a random variable.

Answer 2

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Compare Compare Correlation is the measure of the degree of the relationship between the variables. In regression, the relationship between the variables to predict one by another is assessed. In correlation there is no cause and effect between the variables, whereas in regression there is a cause and effect between the variables. By using correlation, we cannot predict anything, but regression is a predictive tool. Coefficients are symmetrical in correlation but in regression they are asymmetrical. Correlation is independent of change in origin and scale, but regression is not independent of change in scale.

Chapter 13, Problem 64DA

a.

To determine

Construct a scatter diagram.

Explain the relationship between the variables.

Check whether the relation is direct or indirect and also check whether the relation is weak or strong.

b.

To determine

Find the regression equation.

Find the amount that an additional year is added to the maintenance cost.

Find the estimated maintenance cost for a 10-year-old bus.

c.

To determine

Check whether the slope of the regression line is positive or not.

Interpret the findings from Parts (a),(b), and (c).

Expert Solution & Answer

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Answer 3

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Compare Compare Correlation is the measure of the degree of the relationship between the variables. In regression, the relationship between the variables to predict one by another is assessed. In correlation there is no cause and effect between the variables, whereas in regression there is a cause and effect between the variables. By using correlation, we cannot predict anything, but regression is a predictive tool. Coefficients are symmetrical in correlation but in regression they are asymmetrical. Correlation is independent of change in origin and scale, but regression is not independent of change in scale.

Chapter 13, Problem 64DA

a.

To determine

Construct a scatter diagram.

Explain the relationship between the variables.

Check whether the relation is direct or indirect and also check whether the relation is weak or strong.

b.

To determine

Find the regression equation.

Find the amount that an additional year is added to the maintenance cost.

Find the estimated maintenance cost for a 10-year-old bus.

c.

To determine

Check whether the slope of the regression line is positive or not.

Interpret the findings from Parts (a),(b), and (c).

Expert Solution & Answer

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Answer 4

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Compare Compare Correlation is the measure of the degree of the relationship between the variables. In regression, the relationship between the variables to predict one by another is assessed. In correlation there is no cause and effect between the variables, whereas in regression there is a cause and effect between the variables. By using correlation, we cannot predict anything, but regression is a predictive tool. Coefficients are symmetrical in correlation but in regression they are asymmetrical. Correlation is independent of change in origin and scale, but regression is not independent of change in scale.

Chapter 13, Problem 64DA

a.

To determine

Construct a scatter diagram.

Explain the relationship between the variables.

Check whether the relation is direct or indirect and also check whether the relation is weak or strong.

b.

To determine

Find the regression equation.

Find the amount that an additional year is added to the maintenance cost.

Find the estimated maintenance cost for a 10-year-old bus.

c.

To determine

Check whether the slope of the regression line is positive or not.

Interpret the findings from Parts (a),(b), and (c).

Expert Solution & Answer

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Answer 7

Chapter 13, Problem 64DA

a.

To determine

Construct a scatter diagram.

Explain the relationship between the variables.

Check whether the relation is direct or indirect and also check whether the relation is weak or strong.

b.

To determine

Find the regression equation.

Find the amount that an additional year is added to the maintenance cost.

Find the estimated maintenance cost for a 10-year-old bus.

c.

To determine

Check whether the slope of the regression line is positive or not.

Interpret the findings from Parts (a),(b), and (c).

Answer 8

Chapter 13, Problem 64DA

a.

To determine

Construct a scatter diagram.

Explain the relationship between the variables.

Check whether the relation is direct or indirect and also check whether the relation is weak or strong.

Answer 9

Chapter 13, Problem 64DA

a.

To determine

Construct a scatter diagram.

Explain the relationship between the variables.

Check whether the relation is direct or indirect and also check whether the relation is weak or strong.

Answer 10

b.

To determine

Find the regression equation.

Find the amount that an additional year is added to the maintenance cost.

Find the estimated maintenance cost for a 10-year-old bus.

Answer 11

b.

To determine

Find the regression equation.

Find the amount that an additional year is added to the maintenance cost.

Find the estimated maintenance cost for a 10-year-old bus.

Answer 12

c.

To determine

Check whether the slope of the regression line is positive or not.

Interpret the findings from Parts (a),(b), and (c).

Answer 13

c.

To determine

Check whether the slope of the regression line is positive or not.

Interpret the findings from Parts (a),(b), and (c).

Answer 14

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Ch. 13 - Prob. 1SR Ch. 13 - Prob. 1E Ch. 13 - Prob. 2E Ch. 13 - Bi-lo Appliance Super-Store has outlets in several...Ch. 13 - Prob. 4E Ch. 13 - Prob. 5E Ch. 13 - The owner of Maumee Ford-Volvo wants to study the...Ch. 13 - Prob. 2SR Ch. 13 - Prob. 7E Ch. 13 - Prob. 8E

Construct a scatter diagram . Explain the relationship between the variables. Check whether the relation is direct or indirect and also check whether the relation is weak or strong.

Concept explainers

Videos

Construct a scatter diagram.

Explain the relationship between the variables.

Check whether the relation is direct or indirect and also check whether the relation is weak or strong.

Find the regression equation.

Find the amount that an additional year is added to the maintenance cost.

Find the estimated maintenance cost for a 10-year-old bus.

Check whether the slope of the regression line is positive or not.

Interpret the findings from Parts (a),(b), and (c).

Chapter 13 Solutions

Construct a scatter diagram . Explain the relationship between the variables. Check whether the relation is direct or indirect and also check whether the relation is weak or strong.

Concept explainers

Videos

Construct a scatter diagram. Explain the relationship between the variables. Check whether the relation is direct or indirect and also check whether the relation is weak or strong.

Find the regression equation. Find the amount that an additional year is added to the maintenance cost. Find the estimated maintenance cost for a 10-year-old bus.

Check whether the slope of the regression line is positive or not. Interpret the findings from Parts (a),(b), and (c).

Chapter 13 Solutions

Construct a scatter diagram.

Explain the relationship between the variables.

Check whether the relation is direct or indirect and also check whether the relation is weak or strong.

Find the regression equation.

Find the amount that an additional year is added to the maintenance cost.

Find the estimated maintenance cost for a 10-year-old bus.

Check whether the slope of the regression line is positive or not.

Interpret the findings from Parts (a),(b), and (c).