抽样单位为群体,再从群体中随机抽样的方法称为(  )A.单纯随机抽样 B.系统抽样 C.分层抽样 D.整群抽样 E.多级抽样

作者: tihaiku 人气: - 评论: 0
问题 抽样单位为群体,再从群体中随机抽样的方法称为(  )
选项 A.单纯随机抽样 B.系统抽样 C.分层抽样 D.整群抽样 E.多级抽样
答案 D
解析

相关内容:抽样,单位,群体,方法,系统,整群,多级

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  • 消息: [程序异常] : MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.
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