The table below is a measure of how many ounces of caffeinated coffee a person drinks and how much sleep they get. Ounces of coffee Hours of sleep. 22 8.9 24 6.3 38 5.9 22 6.8 19 7.4 35 6.4 28 7.2 19 7.6 27 8.9 28 9.3 25 5.4 18 6.1 35 4.3 33 8.1 28 5.8 17 6.3 25 4.8 32 5.4 18 7.5 22 6.8 25 4.7 35 6.5 41 4.2 18 7.3 51 6.8 18 5.9 32 8.1 27 4.1 38 5.8 41 6.4 52 7.7 18 9.4 34 4.5 41 3.5 33 6.8 37 9.2 28 6.1 51 9.2 17 6.3 18 4.5 25 6 A) Give the Pearson coefficient. B) Now that you found the answer to A, do you expect there to be a strong correlation?

The table below is a measure of how many ounces of caffeinated coffee a person drinks and how much sleep they get. Ounces of coffee Hours of sleep. 22 8.9 24 6.3 38 5.9 22 6.8 19 7.4 35 6.4 28 7.2 19 7.6 27 8.9 28 9.3 25 5.4 18 6.1 35 4.3 33 8.1 28 5.8 17 6.3 25 4.8 32 5.4 18 7.5 22 6.8 25 4.7 35 6.5 41 4.2 18 7.3 51 6.8 18 5.9 32 8.1 27 4.1 38 5.8 41 6.4 52 7.7 18 9.4 34 4.5 41 3.5 33 6.8 37 9.2 28 6.1 51 9.2 17 6.3 18 4.5 25 6 A) Give the Pearson coefficient. B) Now that you found the answer to A, do you expect there to be a strong correlation?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter7: Percents

Section: Chapter Questions

Problem 4CST

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Question

The table below is a measure of how many ounces of caffeinated coffee a person drinks and how much sleep they get.

Ounces of coffee Hours of sleep.
22 8.9
24 6.3
38 5.9
22 6.8
19 7.4
35 6.4
28 7.2
19 7.6
27 8.9
28 9.3
25 5.4
18 6.1
35 4.3
33 8.1
28 5.8
17 6.3
25 4.8
32 5.4
18 7.5
22 6.8
25 4.7
35 6.5
41 4.2
18 7.3
51 6.8
18 5.9
32 8.1
27 4.1
38 5.8
41 6.4
52 7.7
18 9.4
34 4.5
41 3.5
33 6.8
37 9.2
28 6.1
51 9.2
17 6.3
18 4.5
25 6
A) Give the Pearson coefficient.

B) Now that you found the answer to A, do you expect there to be a strong correlation?

Definition Definition Relationship between two independent variables. A correlation tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.

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