A particular professor has noticed that the number of people, y, who complain about his attitude is dependent on the number of cups of coffee, x, he drinks. From eight days of tracking he compiled the following data:People (y)1111879645Cups of coffee (x)11233455Unless otherwise stated, you can round values to two decimal places.a) Using regression to find a linear equation for ˆy . Round to three decimal places.ˆy = b) Find the correlation coefficient. Round to three or four decimals.r =

The regression line is: ŷ = -0.585X + 7.459

Answered: professor has noticed

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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A particular professor has noticed that the number of people, y, who complain about his attitude is dependent on the number of cups of coffee, x, he drinks. From eight days of tracking he compiled the following data:

People (y)	11	11	8	7	9	6	4	5
Cups of coffee (x)	1	1	2	3	3	4	5	5

Unless otherwise stated, you can round values to two decimal places.

a) Using regression to find a linear equation for ˆy . Round to three decimal places.

ˆy =

b) Find the correlation coefficient. Round to three or four decimals.

r =

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