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Statistical Software

Statistical Software. An introduction to Statistics Using R. Instructed by Jinzhu Jia. Chap 10. 方差分析. 参考书目: R 语言与统计分析 (汤银才) 单因子方差分析 双因子方差分析 协方差分析. ANOVA 简介. 方差分析的主要工作就是将观测数据的总变异 ( 波动 ) 按照变异的原因 的不同 分解为因子效应 与 试验误差 ,并对其作出数量分析, 比较各种原因 在总 变异 中 所占的重要程度 ,以此作为进一步统计推断的依据. 单因子方差分析. 目标:.

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Statistical Software

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  1. Statistical Software An introduction to Statistics Using R Instructed by Jinzhu Jia

  2. Chap 10. 方差分析 • 参考书目:R 语言与统计分析 (汤银才) • 单因子方差分析 • 双因子方差分析 • 协方差分析

  3. ANOVA 简介 • 方差分析的主要工作就是将观测数据的总变异(波动)按照变异的原因的不同分解为因子效应与试验误差,并对其作出数量分析,比较各种原因在总变异中所占的重要程度,以此作为进一步统计推断的依据.

  4. 单因子方差分析 目标:

  5. ANOVA 检验统计量

  6. 多重 t 检验

  7. 多重检验(续) • Bonferonii调整 • Consider a case where you have 20 hypotheses to test, and a signicancelevel of 0.05. What's the probability of observing at least one signicantresult just due to chance? • P(at least one signicantresult) = 1 - P(no signicantresults)= 1 - (1 – 0.05)^20 = 0.64

  8. 同时置信区间

  9. 方差齐性检验 • Bartlett 检验

  10. 方差齐性检验

  11. 双因子方差分析 • 基本思想与单因子方差分析类似,要满足如下条件 • 独立 • 正态 • 方差齐

  12. 无交互作用的方差分析

  13. 无交互作用的方差分析

  14. 无交互作用的方差分析

  15. 有交互作用的方差分析

  16. 有交互作用的方差分析

  17. 协方差分析

  18. 作业 • 8.2 • 8.5 • 8.7

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