与之前的方法相似,2.3关于交互效应的双因素方差分析记∑∑∑ = = r i s j t k ijkxrst x 1 1 , ∑ = • = t k ijkij xt x 1 1 ∑∑ = = •• = s j t k ijki xst x 1 1 1 , ∑∑ = = •• = r i t k ijkj xrt x 1 1 1将全体数据对x的偏差平方和∑∑∑ = = = −= r i s j t k ijkT xxS 1 1 1 2)( (24)进行分解,可得ABBAET SSSSS +++= (25)其中∑∑∑ = = = •−= r i s j t k ijijkE xxS 1 1 1 2)( , ∑ = •• −= r i iA xxstS 1 2)(