ANOVA假設方差齊性，雖然要求不嚴，但慎重時還是需要檢驗
以下檢驗法抄錄自JMP軟件給樓主參考
Unequal Variances
When the variances across groups are not equal, the usual analysis of variance assumptions are not satisfied and the anova F-test is not valid. JMP provides four tests for equality of group variances and an anova that is valid when the group sample variances are unequal. The concept behind the first three tests of equal variances is to perform an analysis of variance on a new response variable constructed to measure the spread in each group. The fourth test is Bartlett's test, which is similar to the likelihood-ratio test under normal distributions.

十分感谢！！

方差齐性是指各族方差在统计上无显著差异，并不是指数值上一定相同（不同可能源于随机观测误差）

哎呀 谢谢您的回答 很到位！

那会否有具体的衡量标准呢？