a. Explanation Given info: For a set of data points the sample covariance ( s x x ) is given by, s x x = ∑ i ( x i − x ¯ ) ( y i − y ¯ ) n − 1 = ∑ i x i y i − ( ∑ i x i ) ( ∑ i y i ) n n − 1 To find slope and y -intercept of a regression line sample covariance can be used as, b 1 = s x y s x 2 and b 0 = y ¯ − b 1 x ¯ . Calculation: In problem 14.45 the data set are given as, x y 0 4 2 2 2 0 5 -2 6 1 Now, x i y i x i y i x i 2 0 4 0 0 2 2 4 4 2 0 0 4 5 2 10 25 6 1 6 36 15 5 0 69 And sample size n = 5 b. To determine To find: The regression equation using answer from part a. and given equations. To compare: The result with the result of exercise 14.57.

Introductory Statistics, Books a la Carte Plus NEW MyLab Statistics with Pearson eText -- Access Card Package (10th Edition)

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ISBN: 9780134270364

Author: Neil A. Weiss

Publisher: PEARSON

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Chapter 14.2, Problem 81E

To determine

The sample covariance of the data points in Exercise 14.45 using given equation.

To determine

To find: The regression equation using answer from part a. and given equations.

To compare: The result with the result of exercise 14.57.

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Chapter 14.2, Problem 80E

Chapter 14.2, Problem 82E

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Chapter 14 Solutions

Introductory Statistics, Books a la Carte Plus NEW MyLab Statistics with Pearson eText -- Access Card Package (10th Edition)

Ch. 14.1 - Regarding linear equations with one independent...Ch. 14.1 - Prob. 2E Ch. 14.1 - Consider the linear equation y = b0 + b1x. a....Ch. 14.1 - Prob. 4E Ch. 14.1 - In Exercises 14.514.14, we give linear equations....Ch. 14.1 - Prob. 6E Ch. 14.1 - In Exercises 14.5-14.14, we give linear equations....Ch. 14.1 - Prob. 8E Ch. 14.1 - Prob. 9E Ch. 14.1 - In Exercises 14.514.14, we give linear equations....

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The sample covariance of the data points in Exercise 14.45 using given equation.

Solution Summary: The author explains the sample covariance of the data points in Exercise 14.45 using given equation.

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The sample covariance of the data points in Exercise 14.45 using given equation.

To find: The regression equation using answer from part a. and given equations. To compare: The result with the result of exercise 14.57.

Want to see the full answer?

Chapter 14 Solutions

To find: The regression equation using answer from part a. and given equations.

To compare: The result with the result of exercise 14.57.