Consider the data in the following table. a. Find the sample correlation coefficient r. Interpret your result.
Question:
Consider the data in the following table.
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b. Show that the test statistic T = β1/(Sy|x / Sx√n - 1) for testing H0: β1 = 0 (based on a straight-line regression relationship between Y and X) is exactly equivalent to the test statistic Tʹ = r √n – 2 / √l – r2 for testing H0: p = 0. Use β1 = rSy/Sx and
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d. Despite the conclusion you obtained in part (c), why should you be reluctant to conclude that the two variables are linearly related?
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a S X 5750 S Y 5750 1 0980 using the formula in problem ...View the full answer
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Related Book For 
Applied Regression Analysis And Other Multivariable Methods
ISBN: 632
5th Edition
Authors: David G. Kleinbaum, Lawrence L. Kupper, Azhar Nizam, Eli S. Rosenberg
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