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Get Full Access to Stats Modeling The World - 4 Edition - Chapter 6 - Problem 32
Get Full Access to Stats Modeling The World - 4 Edition - Chapter 6 - Problem 32

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# Solved: Correlation conclusions II The correlation between Fuel Efficiency (as measured ISBN: 9780321854018 481

## Solution for problem 32 Chapter 6

Stats Modeling the World | 4th Edition

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Problem 32

Correlation conclusions II The correlation between Fuel Efficiency (as measured by miles per gallon) and Price of 150 cars at a large dealership is r = -0.34. Explain whether or not each of these possible conclusions is justified: a) The more you pay, the lower the fuel efficiency of your car will be. b) The form of the relationship between Fuel Efficiency and Price is moderately straight. c) There are several outliers that explain the low correlation. d) If we measure Fuel Efficiency in kilometers per liter instead of miles per gallon, the correlation will increase

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Recommended Problems:Fourth Edition: 2.3.1, 2.3.2, 2.3.5, 2.3.11, 2.4.5, 2.4.3, 2.6.3 Fifth Edition: 2.3.1, 2.3.2. 2.3.5, 2.3.11, 2.4.5, 2.4.3, 2.6.3 Problems to be turned in:Fourth Edition: 2.2.1, 2.4.2, 2.3.12, 2.6.11Fifth Edition: 2.2.1, 2.4.2, 2.3.12, 2.6.11Complete the following problems as well. Note that no work is to be done on these pages.1.Suppose a constant, say a, is added to every value of a data set. Exactly how does this affect the mean, variance, and standard deviation when compared to the originals Why (No mathematical proof is needed.)2.Calculate the standard deviation of the following by hand (show all your work to receive full marks.):6, 12, 11, 13, 8, 103.Calculate the mean and standard deviation of each of the following samples by either calculator or

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##### ISBN: 9780321854018

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