To construct: The scatterplot for the variables brain size (in units of 10,000 pixels) and IQ. To identify: The explanatory variable.

Question

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Answer 1

Question

Chapter 4.5, Problem 11AYK

a.

To determine

To construct: The scatterplot for the variables brain size (in units of 10,000 pixels) and IQ.

To identify: The explanatory variable.

b.

To determine

To find: The value of correlation r between brain size and IQ.

To explain: The comparison of the r value with the graph in part (a).

c.

To determine

To find: The correlation coefficient between the brain size and IQ using software.

To check: Whether the result in part (b) and using the software is same, up to round off error or not.

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Answer 2

Question

Chapter 4.5, Problem 11AYK

a.

To determine

To construct: The scatterplot for the variables brain size (in units of 10,000 pixels) and IQ.

To identify: The explanatory variable.

b.

To determine

To find: The value of correlation r between brain size and IQ.

To explain: The comparison of the r value with the graph in part (a).

c.

To determine

To find: The correlation coefficient between the brain size and IQ using software.

To check: Whether the result in part (b) and using the software is same, up to round off error or not.

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Answer 3

Question

Chapter 4.5, Problem 11AYK

a.

To determine

To construct: The scatterplot for the variables brain size (in units of 10,000 pixels) and IQ.

To identify: The explanatory variable.

b.

To determine

To find: The value of correlation r between brain size and IQ.

To explain: The comparison of the r value with the graph in part (a).

c.

To determine

To find: The correlation coefficient between the brain size and IQ using software.

To check: Whether the result in part (b) and using the software is same, up to round off error or not.

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Answer 4

Question

Chapter 4.5, Problem 11AYK

a.

To determine

To construct: The scatterplot for the variables brain size (in units of 10,000 pixels) and IQ.

To identify: The explanatory variable.

b.

To determine

To find: The value of correlation r between brain size and IQ.

To explain: The comparison of the r value with the graph in part (a).

c.

To determine

To find: The correlation coefficient between the brain size and IQ using software.

To check: Whether the result in part (b) and using the software is same, up to round off error or not.

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Answer 5

Chapter 4.5, Problem 11AYK

a.

To determine

To construct: The scatterplot for the variables brain size (in units of 10,000 pixels) and IQ.

To identify: The explanatory variable.

b.

To determine

To find: The value of correlation r between brain size and IQ.

To explain: The comparison of the r value with the graph in part (a).

c.

To determine

To find: The correlation coefficient between the brain size and IQ using software.

To check: Whether the result in part (b) and using the software is same, up to round off error or not.

Answer 6

Chapter 4.5, Problem 11AYK

a.

To determine

To construct: The scatterplot for the variables brain size (in units of 10,000 pixels) and IQ.

To identify: The explanatory variable.

Answer 7

Chapter 4.5, Problem 11AYK

a.

To determine

To construct: The scatterplot for the variables brain size (in units of 10,000 pixels) and IQ.

To identify: The explanatory variable.

Answer 8

b.

To determine

To find: The value of correlation r between brain size and IQ.

To explain: The comparison of the r value with the graph in part (a).

Answer 9

b.

To determine

To find: The value of correlation r between brain size and IQ.

To explain: The comparison of the r value with the graph in part (a).

Answer 10

c.

To determine

To find: The correlation coefficient between the brain size and IQ using software.

To check: Whether the result in part (b) and using the software is same, up to round off error or not.

Answer 11

c.

To determine

To find: The correlation coefficient between the brain size and IQ using software.

To check: Whether the result in part (b) and using the software is same, up to round off error or not.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 4.1 - Prob. 1AYK Ch. 4.1 - Prob. 2AYK Ch. 4.1 - Prob. 3AYK Ch. 4.2 - Prob. 5AYK Ch. 4.3 - Prob. 6AYK Ch. 4.3 - Prob. 7AYK Ch. 4.3 - Prob. 8AYK Ch. 4.4 - Prob. 9AYK Ch. 4.5 - Prob. 10AYK Ch. 4.5 - Prob. 11AYK

To construct: The scatterplot for the variables brain size (in units of 10,000 pixels) and IQ. To identify: The explanatory variable.

To construct: The scatterplot for the variables brain size (in units of 10,000 pixels) and IQ. To identify: The explanatory variable.

To find: The value of correlation r between brain size and IQ. To explain: The comparison of the r value with the graph in part (a).

To find: The correlation coefficient between the brain size and IQ using software. To check: Whether the result in part (b) and using the software is same, up to round off error or not.

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Chapter 4 Solutions

To construct: The scatterplot for the variables brain size (in units of 10,000 pixels) and IQ.

To identify: The explanatory variable.

To find: The value of correlation r between brain size and IQ.

To explain: The comparison of the r value with the graph in part (a).

To find: The correlation coefficient between the brain size and IQ using software.

To check: Whether the result in part (b) and using the software is same, up to round off error or not.