Value Line estimates of sales and earnings growth for individual companies are derived by correlating sales, earnings, and dividends to appropriate components of the National Income Accounts such as...

Value Line estimates of sales and earnings growth for individual companies are derived by correlating sales, earnings, and dividends to appropriate components of the National Income Accounts such as capital spending. Jason Black, an analyst for Value Line, is examining the trend of the capital spending variable from 1977 to 1993. The data are given in Table P-6. a. Plot the data and determine the appropriate trend model for the years 1977