 |
| |||
| random sample; random sampling; random selection | |||
| optional selection; optional sampling | |||
| sample taken at random | |||
| lottery sampling | |||
| purposive selection | |||
| Zufallsauswahl: 15 phrases in 4 subjects |
| Information technology | 1 |
| Mathematics | 1 |
| Operations research | 1 |
| Statistics | 12 |