data Shown to the right for the dependent variable, y, and the independent variable, x, have been collected using simple random sampling. Xy 12 60 a. Construct a scatter plot for these data. Based on the scatter plot, how would you describe the relationship between the two variables? b. Compute the correlation coefficient. 13 70 11 90 13 50 14 60 10 80 15 20 10 100
data Shown to the right for the dependent variable, y, and the independent variable, x, have been collected using simple random sampling. Xy 12 60 a. Construct a scatter plot for these data. Based on the scatter plot, how would you describe the relationship between the two variables? b. Compute the correlation coefficient. 13 70 11 90 13 50 14 60 10 80 15 20 10 100
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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Please answer part b)
The answer I was given of 0.88 is incorrect. Thanks!
Transcribed Image Text:14.1.2
Questic
The data shown to the right for the dependent variable, y, and the independent
variable, x, have been collected using simple random sampling.
X y
12
60
13
70
a. Construct a scatter plot for these data. Based on the scatter plot, how would
you describe the relationship between the two variables?
b. Compute the correlation coefficient.
11
90
13
50
14
60
10
80
15
20
10
100
a. Which graph below shows a scatter plot tor these data?
OA.
OB.
無:
Ay
15-
Ay
120-
15-
Ay
120-
10+
ピ
15
10++
120
120
10
15
10
There appears to be a negative linear relationship between x and y.
b. What is the correlation coefficient?
r= 0.88 (Round to two decimal places as needed.)
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