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.
x | 3 | 7 | 15 | 38 | 70 |
y | 40 | 35 | 30 | 26 | 17 |
(a) Make a scatter diagram of the data and visualize the line you think best fits the data.
(b) Would you say the correlation is low, moderate, or strong? positive or negative?
strong and positive
low and negative
strong and negative
low and positive
moderate and positive
moderate and negative
(c) Use a calculator to verify that Σx = 133,
Σx2 = 6627, Σy = 148,
Σy2 = 4690, and Σxy = 2993. Compute
r. (Round your answer to three decimal places.)
r =
As x increases, does the value of r imply that
y should tend to increase or decrease? Explain.
Given our value of r, y should tend to remain constant as x increases.
Given our value of r, y should tend to increase as x increases.
Given our value of r, y should tend to decrease as x increases.
Given our value of r, we cannot draw any conclusions for the behavior of y as x increases.
The statistic software output for this problem is :
(a)
(b)
strong and negative
(c)
r = -0.966
Given our value of r, y should tend to decrease as x increases.
Let x be the average number of employees in a group health insurance plan, and let...
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. x 3 7 15 36 73 y 40 35 30 28 20 (a) Make a scatter diagram of the data and visualize the line you think best fits the data. Submission Data (b) Would you say the correlation is low, moderate, or strong? positive or negative? strong and positive low and negative low...
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. x 3 7 15 36 72 y 40 35 30 26 21 (a) Make a scatter diagram of the data and visualize the line you think best fits the data. You can get Flash Player free from Adobe's website. (b) Would you say the correlation is low, moderate, or strong? positive or negative?...
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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. x 3 7 15 33 72 y 40 35 30 25 20 (a) Make a scatter diagram of the data and visualize the line you think best fits the data. Get Flash Player Flash Player version 10 or higher is required for this question. You can get Flash Player free from Adobe's website....
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