Tire pressure (in kPa) was measured for the left and right front tires on a sample of 6 automobiles.Left (x) Right (y)184190210201215198227220190196218221 e. Compute the covariance and correlation coefficient r between the right tire pressure.f. How do you know the relationship between pressure in the left and right tires is positive.g. What value would a correlation coefficient (r) be close to if there was no (linear) relationship betweenthe 2 tire pressures?

Answered: Image /qna-images/answer/e54af3dc-6807-4b8a-8edd-c652e4b8ef1d.jpg

Answered: e. Compute the covariance and…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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After gathering data about the number of starfish and measuring the pollution in areas of the ocean you find a negative linear correlation between pollution levels and number of starfish. What can you conclude based on this information? a. There is a confounding variable that is affecting both pollution and starfish. b. As pollution rises the number of starfish falls c. That pollution is causing starfish to die, leading to the negative correlation d. That pollution is supporting starfish, leading to the negative correlation
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A psychologist has calculated the correlation between two variables as 0.9. Which of the following statements is correct? a. The average value of y changes by 0.9 when x is increased by 1. b. The average value of x changes by 0.9 when y is increased by 1. c. The explanatory variable ( x ) explains 0.9 of the variation in the response variable ( y ) d. The explanatory variable ( x ) explains 0.81 of the variation in the response variable ( y )

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