Question: Health Insurance: Administrative Cost. The following data are based on information Domestic Affairs. 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

1. Make a scatter diagram and draw the line you think best fits the data.
2. Would you say the correlation is low, moderate, or strong? positive or negative?
3. Use a calculator to verify that \(\sum{x}\) = 135, \(\sum{{{x}^{2}}}\) = 7133, \(\sum{y}\) = 148, \(\sum{{{y}^{2}}}\) = 4674,

and \(\sum{xy}\) = 3040. Compute r. As x increases, does the value of r imply that

should tend to increase or decrease? Explain.

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