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| 样本方案; 样本设计; 调查设计 | |||
| 抽样设计 | |||
| 样本品设计 | |||
| 取样设计; 采样设计 | |||
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sampling design : 4 phrases in 3 subjects |
| Business | 1 |
| Statistics | 1 |
| Technology | 2 |
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