| Length of stay descriptive statistics by physician, 2009. |
| | Discharge Days (LOS) |
| Patient | Physician A | Physician B | Physician C | Physician D | Physician E |
| 1 | 5 | 6 | 7 | 3 | 4 |
| 2 | 7 | 9 | 6 | 2 | 6 |
| 3 | 4 | 8 | 8 | 5 | 3 |
| 4 | 4 | 4 | 5 | 7 | 7 |
| 5 | 5 | 7 | 4 | 3 | 3 |
| 6 | 4 | 12 | 8 | 4 | 5 |
| 7 | 2 | 10 | 3 | 2 | 6 |
| 8 | 6 | 5 | 7 | 5 | 3 |
| 9 | 3 | 6 | 6 | 3 | 8 |
| 10 | 5 | 8 | 4 | 4 | 5 |
| 11 | 3 | 9 | 8 | 2 | 9 |
| 12 | 4 | 6 | 12 | 7 | 4 |
| 13 | 7 | 13 | 5 | 4 | 3 |
| 14 | 9 | 5 | 4 | 3 | 6 |
| 15 | 3 | 7 | 8 | 6 | 4 |
| 16 | 4 | 7 | 5 | 3 | 7 |
| Mean |
| Median |
| Mode |
| Variance |
| Standard
Deviation |
| Exercise#1 |
| Calculate the mean, median, and mode of the LOS of patients seen by each physician (round to one decimal point). |
| Calculate the variance and standard deviation of LOS by each physician (round to two decimal points). |