A sales manager collected the following data on annual sales and years of eperience. Sales Years of experience person Annual sales (R thousands) 85 1 3 2 6 94 3 9 100 4 12 128 5 11 135 The regression equation is y = x (round values to 2 decimal places). The correlation coefficient is (rounded to 4 decimal places). This is considered What proportion of sales is explained by the regression equation? (rounded to 4 decimal places). This means that the fit of the model is For a sales person with 4 years experience, estimate the sales R