| Angielski tezaurus | |||
| |||
| Selection of samples by a process involving equal chances of selection of each item | |||
|
random sampling : 7 do fraz, 2 tematyki |
| Matematyka | 3 |
| Statystyka | 4 |
| Angielski tezaurus | |||
| |||
| Selection of samples by a process involving equal chances of selection of each item | |||
|
random sampling : 7 do fraz, 2 tematyki |
| Matematyka | 3 |
| Statystyka | 4 |