Question: Compute the sample correlation coefficient for the data of problem.
Problem: Recently, research efforts have focused on the problem of predicting a manufacturer's market share by using information on the quality of its product. Suppose that the following data are available on market share, in percentage (Y), and product quality, on a scale of 0 to 100, determined by an objective evaluation procedure (X):
Estimate the simple linear regression relationship between market share and product quality rating.