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重复测量方差F值的计算（Calculation of repeated measures ANOVA F-value）
  *计算步骤：

  （1）陈述假设，一般只需给出虚无假设H0；
  （2）给出显著性水平；
  （3）确定检验的自由度；
  （4）由分子分母的自由度，确定F值的临界值；
  （5）计算样本的F统计量。
  Here is the translation of the steps for calculating the F-value for repeated measures:
  (1) State the hypothesis, usually only the null hypothesis H0 needs to be provided.
  (2) Specify the significance level.
  (3) Determine the degrees of freedom for the test.
  (4) Determine the critical value of F based on the degrees of freedom of the numerator and denominator.
  (5) Calculate the F-statistic for the sample.



  *F=组间平均变异 / 误差平均变异
  *F = Between-group mean variation / Error mean variation