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ANOVA的步骤 (Steps of ANOVA)
1、陈述原假设H0和备择假设H1，确定进行检验的显著性水平α；
State H0 and H1.Determine the level of significance α.
2、确定检验的方向性，需要注意的是ANOVA检验总是单尾检验； To determine the directionality of the test. It should be noted that the ANOVA test is always a single tail test.
3、指出检验的自由度df，注意在ANOVA检验中有两个自由度，分别是组间变异的自由度（k-1）和组内变异的自由度（N-k），其中k为设置水平数，N为总的样本容量； It is noted that there are two degrees of freedom in the ANOVA test, namely the degree of freedom of inter-group variation (k-1) and the degree of freedom of intra-group variation (N-k), where k is the number of setting levels and N is the total sample capacity.
4、查表找出临界F统计量，需要用到的有组间自由度、组内自由度以及显著性水平α，知道这三个值即可查表找出临界F统计量的值； Use the α of degrees of freedom between groups, degrees of freedom within the group, and significance level to look up the table to find out the value of the critical F-statistic.
5、对于样本计算F统计量的值，画出如下图所示的方差分析表
Calculate the F-value of your sampple, and draw the ANOVA table as shown in the figure above.
6、比较计算得出的F值和临界F值，如果F<Fcrit，则接受原假设H0，如果F<Fcrit，则拒绝H0，接受备择假设H1； Compare the calculated F-value with the critical F-value.If F-obs < F-crit，then accept the null hyphothesis; if not, then refuse it and accept the alternative hyphothesis.
7、进行事后检验。 Carry out the postmortem.