400 10 11 12 13 14 15 EXERCISES Stock Price The following table gives the stock price for the large equipment manufacturer Caterpillar at the start of the given quarters. Let r = 1 correspond to the first quarter of the year 2015. Date Quarter | Stock Price January 2015 $91.77 April 2015 2 $80.03 July 2015 3 $84.82 October 2015 4 $65.36 January 2016 5 $67.96 April 2016 6 $76.54 July 2016 7 $75.81 October 2016 8 $88.77 (1) Verify that the least-squares regression line that models these data (with rounded coefficients) is y= -0.771 + 82.3. (2) Use the model from Exercise 1 to calculate the predicted values y for each quarter in the table