Luca is investigating how long his phone's battery lasts (in hours) for various brightness levels (on a scale of 0-100). His data is displayed in the table and graph below. Brightness Level (x) Hours (y) 33 5.7 6.3 5.3 4.2 3.3 1 0 35 48 64 89 96 30 30 30 40 50 60 70 80 90 100 110 Brightness Level Calculate the correlation coefficient. Round accurately to at least three decimals. Use the correlation coefficient to describe the strength and direction:
Luca is investigating how long his phone's battery lasts (in hours) for various brightness levels (on a scale of 0-100). His data is displayed in the table and graph below. Brightness Level (x) Hours (y) 33 5.7 6.3 5.3 4.2 3.3 1 0 35 48 64 89 96 30 30 30 40 50 60 70 80 90 100 110 Brightness Level Calculate the correlation coefficient. Round accurately to at least three decimals. Use the correlation coefficient to describe the strength and direction:
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter1: Functions
Section1.2: The Least Square Line
Problem 7E
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Transcribed Image Text:Luca is investigating how long his phone's battery lasts (in hours) for various brightness levels (on a scale of
0-100). His data is displayed in the table and graph below.
Brightness Level (x)
33
35
48
64
89
96
9
8
2
I
--
Hours (y)
5.7
6.3
5.3
4.2
3.3
1
10 20 30 40 50 60 70 80 90 100 110
Brightness Level
Calculate the correlation coefficient. Round accurately to at least three decimals.
Use the correlation coefficient to describe the strength and direction:
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