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?Explain what is meant by degrees of freedom.

Statistics: Informed Decisions Using Data | 5th Edition | ISBN: 9780134133539 | Authors: Michael Sullivan III ISBN: 9780134133539 240

Solution for problem 53 Chapter 9.2

Statistics: Informed Decisions Using Data | 5th Edition

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Statistics: Informed Decisions Using Data | 5th Edition | ISBN: 9780134133539 | Authors: Michael Sullivan III

Statistics: Informed Decisions Using Data | 5th Edition

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Problem 53

Explain what is meant by degrees of freedom.

Step-by-Step Solution:

Step 1 of 5) Explain what is meant by degrees of freedom. The inclusion of Bubba Watson in the data set causes the slope of the regression line to decrease (from 3.1661 to 2.2287) and the y-intercept to increase substantially (from -55.80 to +39.46). In other words, the Bubba data pulls the least-squares regression line toward his observation. Look at the scatter diagram in Figure 27. Notice that Bubba’s shot has high leverage and a large residual (based on predictions using the “without Bubba” line. Therefore, Bubba’s data point is influential.

Step 2 of 2

Chapter 9.2, Problem 53 is Solved
Textbook: Statistics: Informed Decisions Using Data
Edition: 5
Author: Michael Sullivan III
ISBN: 9780134133539

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