Worldwide Cell Phone Sales Following are forecasts of worldwide annual cel...

Worldwide Cell Phone Sales Following are forecasts of worldwide annual cell phone handset sales:

(x = 3 represents 2003). Complete the following table and obtain the associated regression line. (Round coefficients to 2 decimal places.) HINT [See Example 3.]

Use your regression equation to project the 2008 sales.

Example 3:

Find the correlation coefficient for the data in Example 2. Is the regression line a good fit?

Thus, the fit is a fairly good one, that is, the original points lie nearly along a straight line, as can be confirmed from the graph in Example 2.