 |
| |||
| the quota sample | |||
| proportional sampling | |||
| quota sampling | |||
| proportional allocation of the sample | |||
| proportionate sampling | |||
| 按比例抽样: 7 phrases in 6 subjects |
| Desert science | 1 |
| Economy | 1 |
| Laboratory equipment | 1 |
| Quality control and standards | 1 |
| Statistics | 2 |
| Technology | 1 |