(a)
To make:a residual plot and describe how the line fits the data.
(a)
Answer to Problem 56E
Explanation of Solution
Calculation:
The figure shows a random scatter of points in a horizontal band centered at zero. Most of the residuals are between
Conclusion:
Therefore, the residual plot is drawn.
Prediction error of 200 is relatively large compared with the actual metabolic; line does not fit the data accurately.
(b)
To find: the point which has the largest residual
(b)
Answer to Problem 56E
The point
Explanation of Solution
Calculation:
The below table shows the values of predicted Y and residuals
Mass (kg) (X) | Metabolic rate (cal/24hrs) (Y) | Predicted Y (Y) | Residuals (Y-Y) |
36.1 | 995 | 1068.503 | |
54.6 | 1425 | 1512.985 | |
48.5 | 1396 | 1366.426 | |
42 | 1418 | 1210.256 | |
50.6 | 1502 | 1416.881 | |
42 | 1256 | 1210.256 | |
40.3 | 1189 | 1169.412 | |
33.1 | 913 | 996.4244 | |
42.4 | 1124 | 1219.867 | |
34.5 | 1052 | 1030.061 | |
51.1 | 1347 | 1428.894 | |
41.2 | 1204 | 1191.036 |
From the table, the point
Conclusion:
Therefore, the point
Chapter 3 Solutions
The Practice of Statistics for AP - 4th Edition
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