Question: the following data are based on informationfrom 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.

X 3 7 15 35 75
Y 40 35 30 25 18

a) make a scatter diagram and draw the line you think best fits the data
b) would you say the correlation is low, moderate or strong?postive or negative?
c) use a calculator to verify that x=135, x2=7133, y=148, y2 =4674, and xy=3040. compute r. as x increases, does the value of r imply that y should tend to increase or decrease? explain