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克-瓦氏单向方差分析

小样本情况下的克-瓦式单向方差分析

Kruskal-Wallis one-way ANOVA in the case of small samples

  • 对于两个以上独立样本的平均数差异的显著性检验,如果并不符合参数检验的前提,应该使用克-瓦式单向方差分析
    For significance testing of differences in means of two or more independent samples, if the premise of parametric testing is not met, one-way ANOVA with Kruskal-Wallis should be used.
  • 克-瓦式单向方差是将所有样本的数据合并在一起,按照从小到大的顺序编秩次,再计算各样本的秩次和\\One-way ANOVA with Kruskal-Wallis is to combine the data of all samples, organize the ranks in order from smallest to largest, and then calculate the sum of the ranks of the samples.
  • 克-瓦式单向方差分析的统计值H的值
    The value of the statistic H for the Kruskal-Wallis' one-way ANOVA
  • N是所有样本容量之和,n是各个样本的样本容量,R是各组样本数据的秩次和\\N is the sum of all sample sizes, n is the sample size of each sample, and R is the rank sum of each set of sample data

大样本情况下的克-瓦式单向方差分析

One-way ANOVA of the Kruskal-Wallis type with large samples

  • 当样本容量或样本数目比较大的时候,统计量H接近自由度k-1的χ²分布,因此可以通过查χ²分布表来得到相应的H的临界值\\When the sample size or number of samples is relatively large, the statistic H is close to the χ² distribution with degree of freedom k-1, so the corresponding critical value of H can be obtained by checking the table of χ² distribution
克-瓦氏单向方差分析.txt · 最后更改: 2024/04/22 11:10 由 caomingsu