The data points given in Exercises 6 were formed by reversing the slope of the lines in

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The data points given in Exercises 6 were formed by reversing the slope of the lines in Exercises 4. Plot the points on graph paper and calculate r and r2. Notice the change in the sign of r and the relationship between the values of r2 compared to Exercises 4.

By what percentage was the sum of squares of deviations reduced by using the least-squares predictor yˆ5a1bx rather than y as a predictor of y?

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Introduction To Probability And Statistics

ISBN: 9780357114469

15th Edition

Authors: William Mendenhall Iii , Robert Beaver , Barbara Beaver

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