Estimators | Percent relative efficiency with respect to mean per unit |
| 100 |
| 190 |
| 129 |
| 206 |
| 166 |
| 374 |
| 151 |
| 245 |
| 234 |
| 419 |
| 240 |
| 490 |
| 354 |
| 630 |