The dataset in the file Lab11data.xlsx contains data on Criminimushrooms. The factor variable is the weight of the mushroom ingrams and the response variable is the total copper content in mg.1. Plot Copper vs. Weight and describe. 2. Find least squaresregression line and interpret slope in the words of the problem. 3.Find the coefficient of determination (R2) and interpret incontext. 4. Find the correlation coefficient (R) and interpret incontext. 5. Find and interpret a 95% Confidence Interval for thetrue slope. 6. Find the predicted values for Weights of 12.1, 15.8,19.7. 7. Find the residuals values for Weights of 12.1, 15.8, 19.7.8. Graph the standardized residuals vs. predicted values (x-axis).Describe and comment. 9. Graph the predicted values vs. the actualaccuracy values (x-axis). Describe and comment.
Weight (g) | Copper (mg) |
15.8 | 1.0 |
19.7 | 1.8 |
16.3 | 2.0 |
16.3 | 1.1 |
16.0 | 1.0 |
14.2 | 0.6 |
19.4 | 1.5 |
12.7 | 0.7 |
18.0 | 1.5 |
12.6 | 0.8 |
16.6 | 0.8 |
13.5 | 1.0 |
13.0 | 1.1 |
15.5 | 1.0 |
17.0 | 1.0 |
17.3 | 1.2 |
17.5 | 1.4 |
12.1 | 0.5 |
13.3 | 0.9 |
14.5 | 1.3 |
16.0 | 1.5 |
15.0 | 1.1 |
16.6 | 1.6 |
15.4 | 1.5 |
19.1 | 1.8 |
19.4 | 2.2 |
19.3 | 2.3 |
15.1 | 1.4 |
15.3 | 1.3 |
17.3 | 1.3 |
