| |||
stratified sample | |||
stratification sampling | |||
the stratified sampling | |||
group sampling | |||
stratified sampling | |||
step sampling; stratified sampling (法) | |||
| |||
group sampling | |||
| |||
stratified sampling |
分 层抽样 : 52 phrases in 9 subjects |
Business | 6 |
Commerce | 4 |
Desert science | 1 |
Earth sciences | 1 |
Ecology | 1 |
Marketing | 5 |
Quality control and standards | 1 |
Statistics | 10 |
Technology | 23 |