Let x be the average number of employees in a group health insurance plan, and let y be the average administrative cost as a percentage of claims. 15 38 74 35 30 20 20 A USE SALT (a) Make a scatter diagram of the data and visualize the line you think best fits the data. 35 10 20 30 40 s0 60 70 20la 10 20 30 40 50 60 70 10 20 30 40 s0 60 70 10 20 30 40 s0 60 70 X(average number of employees) K(average number of employees) Xaverage number Xaverage number of employees) of employees) (b) Would you say the correlation is low, moderate, or strong? positive or negative? O strong and positive O strong and negative O maderate and positive O low and positive O low and negative O maderate and negative («) Use a caloulator to verity that x - 137, - 7203, zy - 152, - 4909, and Xxy = 3359, Compute r. (Round your anawer to four decimal places.) As x increases, does the value of r imply that y should tend to increase or decrease? Explain. O Given our value of r, y should tend to increase as x increases. O Given our value of r, y should tend to remain constant as x increases. O Given our value of r, we cannot draw any conclusions for the behavior of y as xincreases. O Given our value of r, y should tend to decrease as x increases. ca d adead
Let x be the average number of employees in a group health insurance plan, and let y be the average administrative cost as a percentage of claims. 15 38 74 35 30 20 20 A USE SALT (a) Make a scatter diagram of the data and visualize the line you think best fits the data. 35 10 20 30 40 s0 60 70 20la 10 20 30 40 50 60 70 10 20 30 40 s0 60 70 10 20 30 40 s0 60 70 X(average number of employees) K(average number of employees) Xaverage number Xaverage number of employees) of employees) (b) Would you say the correlation is low, moderate, or strong? positive or negative? O strong and positive O strong and negative O maderate and positive O low and positive O low and negative O maderate and negative («) Use a caloulator to verity that x - 137, - 7203, zy - 152, - 4909, and Xxy = 3359, Compute r. (Round your anawer to four decimal places.) As x increases, does the value of r imply that y should tend to increase or decrease? Explain. O Given our value of r, y should tend to increase as x increases. O Given our value of r, y should tend to remain constant as x increases. O Given our value of r, we cannot draw any conclusions for the behavior of y as xincreases. O Given our value of r, y should tend to decrease as x increases. ca d adead
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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Transcribed Image Text:Let x be the average number of employees in a group health insurance plan, and let y be the average administrative cost as a percentage of claims.
3
15
38
74
v 40 35
30
28
20
A USE SALT
(a) Make a scatter diagram of the data and visualize the line you think best fits the data.
40
40
35 .
30
30
30
30
25
25
25
25
20
20
20la
20
10 20 30 40 50 60 70
10 20 30 40 50 60 70
10 20 30 4o 50 60 70
10 20 30 4o 50 60 70
X (average number
X (average number
X (average number
X (average number
of employees)
of employees)
of employees)
of employees)
(b) Would you say the correlation is low, moderate, or strong? positive or negative?
O strong and positive
O strong and negative
O moderate and positive
O low and positive
O low and negative
O moderate and negative
(c) Use a caloulator to verify that Ex - 137, Er - 7203, 2y - 153, 2 - 4909, and Exy - 3359. Compute r. (Round your answer to four decimal places.)
As x increases, does the value of r imply that y should tend to increase or decrease? Explain.
O Given our value of r, y should tend to increase as x increases.
O Given our value of r, y should tend to remain constant as x increases.
O Given our value of r, we cannot draw any conclusions for the behavior of y as x increases.
O Given our value of r, y should tend to decrease as x increases.
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