 |
| |||
| 统计分层抽样 | |||
| ★ 分层抽样; 分层取样 | |||
| 多层抽样 | |||
| 分层抽样法; 分层随机抽样 | |||
| 分层抽样 (法); 分层采样 | |||
|
stratified sampling : 54 do fraz, 13 tematyki |
| Biznes | 5 |
| Demografia | 2 |
| Ekonomia | 1 |
| Geotechnics | 1 |
| Handel | 3 |
| Marketing | 3 |
| Nauka o ziemi | 1 |
| Nauka pustynna | 1 |
| Papiery wartościowe | 2 |
| Rolnictwo | 1 |
| Socjologia | 2 |
| Statystyka | 6 |
| Technika i technologia | 26 |