The article ?$115K! The 13 Best Paying U.S. Companies? (USA TODAY, August 11, 2015) gave the following data on median worker pay (in thousands of dollars) and the 1-year percent change in stock price for the 13 highest paying companies in the United States.

a. Construct a scatterplot for these data.

b. Calculate and interpret the value of the correlation coefficient.

c. The article states that companies that pay more are seeing a payoff in their stock performance. Is this conclusion justified based on these data? Explain.

d. Is it reasonable to generalize conclusions based on these data to the population of all companies in the United States? Explain why or why not.

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Percent Change Worker Pay in Stock Price Median Company Jupiter Networks 134.7 21.7 Netflix 132.2 92.2 Equinix 125.0 33.9 Altera 122.8 52.2 Visa 122.5 41.9 Yahoo Xilinx 121.2 2.8 121.2 5.2 VeriSign 119.0 30.1 Microsoft 118.0 8.0 Broadcom 118.0 37.3 F5 Networks 117.6 15.9 Adobe Systems 117.4 22.0 eBay 115.1 -44.7