题目是英文的，如下：

We perform an ANOVA with 9 subjects. We assign 3 subjects to each of 3 treatment groups. The data do not meetthe assumptions of ANOVA. So, we decide to perform a permutation test.  Howmany total permutations must we compute?



有9个实验对象，分别安排3个到3个不同的组，做排列检定（置换检验），问总共要置换几次。。


大概翻译如下~ 希望会的同学帮忙解答。。谢谢啦！