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样本量估计及其在nQuery和SAS软件上的实现--率的比较(五) 被引量:1

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摘要 2.2.3多样本率的差异性检验2.2.3.1多个样本率比较的X^2检验方法:Lachin(1977)⑷提出的多样本率检验的样本量估计是建立在自由度为g-1,非中心参数为N△^2的非中心X^2分布基础上的,检验效能的计算公式为,1-β=1-X^2[X^21-α,(g-1),g-1,N△^2](2-33)其中,
出处 《中国卫生统计》 CSCD 北大核心 2013年第1期146-149,共4页 Chinese Journal of Health Statistics
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