The following is a set of data from a sample of n=11 items. Complete parts (a) through (c). X 19 8 12 10 9 2 15 17 16 20 4 Y 57 24 36 30 27 6 45 51 48 60 12 Question content area bottom Part 1 a. Compute the sample covariance. enter your response here (Round to three decimal places as needed.) Part 2 b. Compute the coefficient of correlation. r=enter your response here (Round to three decimal places as needed.) Part 3 c. How strong is the relationship between X and Y? Explain. A. The variables X and Y have a perfect negative correlation because all points fall on a straight line with a negative slope. B. The variables X and Y have a strong positive correlation because as X increases, Y tends to increase also. C. The variables X and Y have a perfect positive correlation because all points fall on a straight line with a positive slope. D. The variables X and Y have no correlation.
The following is a set of data from a sample of n=11 items. Complete parts (a) through (c). X 19 8 12 10 9 2 15 17 16 20 4 Y 57 24 36 30 27 6 45 51 48 60 12 Question content area bottom Part 1 a. Compute the sample covariance. enter your response here (Round to three decimal places as needed.) Part 2 b. Compute the coefficient of correlation. r=enter your response here (Round to three decimal places as needed.) Part 3 c. How strong is the relationship between X and Y? Explain. A. The variables X and Y have a perfect negative correlation because all points fall on a straight line with a negative slope. B. The variables X and Y have a strong positive correlation because as X increases, Y tends to increase also. C. The variables X and Y have a perfect positive correlation because all points fall on a straight line with a positive slope. D. The variables X and Y have no correlation.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
The following is a set of data from a sample of
n=11
items. Complete parts (a) through (c).|
X
|
19
|
8
|
12
|
10
|
9
|
2
|
15
|
17
|
16
|
20
|
4
|
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Y
|
57
|
24
|
36
|
30
|
27
|
6
|
45
|
51
|
48
|
60
|
12
|
Question content area bottom
Part 1
a. Compute the sample covariance .
enter your response here
(Round to three decimal places as needed.)Part 2
b. Compute the coefficient of correlation .
r=enter your response here
(Round to three decimal places as needed.)
Part 3
c. How strong is the relationship between X and Y? Explain.
The variables X and Y have a perfect negative correlation because all points fall on a straight line with a negative slope.
The variables X and Y have a strong positive correlation because as X increases, Y tends to increase also.
The variables X and Y have a perfect positive correlation because all points fall on a straight line with a positive slope.
The variables X and Y have no correlation.
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