In Table 9.1, financial performance data of 30 chemical companies are presented. Use growth in earnings per share, labelled EPS5, as the dependent variable and growth in sales, labelled SALESGR5, as the independent variable. (A description of these variables is given in Section 9.3.) Plot the data, compute a regression line, and test that b = 0 and a = 0. Are earnings affected by sales growth for these chemical companies? Which company’s earnings were highest, considering its growth in sales?