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关注：1
2013-05-23 12:21
求翻译：A 偶遇抽样 B 系统抽样 C 立意抽样 D 雪球抽样是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
A 偶遇抽样 B 系统抽样 C 立意抽样 D 雪球抽样
问题补充： |
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2013-05-23 12:21:38
Purposive sampling a ran into systematic sampling sample b c d Snowball sampling
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2013-05-23 12:23:18
Zhou Yongkang A random sampling B C sampling system reinforces D snow ball sample sample
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2013-05-23 12:24:58
A meets by chance sampling B systematic sampling C decides sampling D snowball sampling
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2013-05-23 12:26:38
Purposive sampling a ran into systematic sampling sample b c d Snowball sampling
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2013-05-23 12:28:18
Purposive sampling a ran into systematic sampling sample b c d Snowball sampling
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