配对样本的差值不符合正态分布,咋统计分析?

2017-05-14 医咖会 医咖会

当一组配对样本的数据中差值d服从正态分布时,我们可以选用配对样本t检验的方法进行统计检验。但是,如果差值d不符合正态分布时,我们该如何处理呢? 我们知道有些数据并不符合参数检验的要求,最常见的情况是总体不符合正态分布,这时我们就可以使用非参数检验的方法。同样,如果配对样本的差值不符合正态分布,那我们将使用配对样本的秩和检验进行数据分析。 我们来举个例子,为研究先后出生的孪生兄弟间智力是否存在差

当一组配对样本的数据中差值d服从正态分布时,我们可以选用配对样本t检验的方法进行统计检验。但是,如果差值d不符合正态分布时,我们该如何处理呢? 我们知道有些数据并不符合参数检验的要求,最常见的情况是总体不符合正态分布,这时我们就可以使用非参数检验的方法。同样,如果配对样本的差值不符合正态分布,那我们将使用配对样本的秩和检验进行数据分析。 我们来举个例子,为研究先后出生的孪生兄弟间智力是否存在差异,对12对孪生兄弟的智力进行测试,结果见下表: 二、对数据结构的分析 上述数据为12对孪生兄弟之间的智力得分,需要判断每对孪生兄弟之间的智力得分差异,测量指标为智力得分,属于配对设计的定量资料。对孪生兄弟之间的智力得分差值进行正态性检验,可以发现智力得分的差值不符合正态分布,因此本数据选用配对样本的秩和检验。 三、SPSS分析方法 1. 将数据录入SPSS 2. 在操作框中选择Analyze—Nonparametric Test——Legacy Dialogs--2 Related Samples 3. 选项设置 对话框设置:将“先出生”和“后出生”两个智力评分数值变量放入Test Pairs框

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    2018-01-01 zhzhxiang
  3. 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    2017-08-17 189****7206

    学习了谢谢分享

    0

  4. 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authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo5ALFCchxKu5lzcATvTHtPtrEnGmKJZcFanOhYZksGriaE3akoWCBx3kakTg1yhJMf9Vvmrv8j8nOOgv6eKxNTtr/0, createdBy=f2f81980263, createdName=1e17f87dm80(暂无匿称), createdTime=Sun May 14 10:16:43 CST 2017, time=2017-05-14, status=1, ipAttribution=)]
    2017-05-25 惠映实验室

    统计学真的是一门大科学

    0

  5. 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    2017-05-23 184****9840

    非参数检验的文章,学习了谢谢分享。

    0

  6. 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authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo5ALFCchxKu5lzcATvTHtPtrEnGmKJZcFanOhYZksGriaE3akoWCBx3kakTg1yhJMf9Vvmrv8j8nOOgv6eKxNTtr/0, createdBy=f2f81980263, createdName=1e17f87dm80(暂无匿称), createdTime=Sun May 14 10:16:43 CST 2017, time=2017-05-14, status=1, ipAttribution=)]
    2017-05-20 130****4638

    学习了谢谢分享。

    0

  7. 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authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo5ALFCchxKu5lzcATvTHtPtrEnGmKJZcFanOhYZksGriaE3akoWCBx3kakTg1yhJMf9Vvmrv8j8nOOgv6eKxNTtr/0, createdBy=f2f81980263, createdName=1e17f87dm80(暂无匿称), createdTime=Sun May 14 10:16:43 CST 2017, time=2017-05-14, status=1, ipAttribution=)]
    2017-05-14 flyingzyx

    怎么对差值进行正态检验呢?

    0

  8. 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    2017-05-14 lovetcm

    简洁明了!非常实用

    0

  9. 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    2017-05-14 1ddf0692m34(暂无匿称)

    学习了,很好

    0

  10. 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    2017-05-14 1e17f87dm80(暂无匿称)

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