Question: A recent article in Bloomberg Businessweek listed the Best Small Companies. We are interested in the current results of the companies sales and earnings. A

A recent article in Bloomberg Businessweek listed the “Best Small Companies.” We are interested in the current results of the companies’ sales and earnings. A random sample of 12 companies was selected and the sales and earnings, in millions of dollars, are reported below.


A recent article in Bloomberg Businessweek listed the “Best Small


Let sales be the independent variable and earnings be the dependent variable.
a. Draw a scatter diagram.
b. Compute the correlation coefficient.
c. Determine the regression equation.
d. For a small company with $50.0 million in sales, estimate theearnings.

Sales Earnings (S millions) ( millions) Company Sales Earnings S millions) (S millions) Company Papa John's International Applied Innovation $89.2 18.6 18.2 71.7 58.6 46.8 $4.9 Checkmate Electronics $17.5 11.9 19.6 51.2 28.6 69.2 S 2.6 Wall Data Davidson & Associates Chico's FAS 4.4 Royal Grip 1.3 M-Wave 8.0 Serving-N-Slide 6.6 Daig .1 Cobra Golf 3.5 8.2 6.0 12.8

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