引进记号 ∑X,,=∑M,X=∑∑X S=∑∑(X1-x)S2>(X-x)=(x-X) SB=∑∑(X-X)2=r2(X-x)2 SE=∑∑(X-X-+x) 我们有 SST= SSE+ ssa+ ssB引进记号: 1 1 1 1 1 1 1 , , s r r s i ij j ij ij j i i j X X X X X X s r rs   = = = = = = =    2 1 1 ( ) r s ij i j SST X X = = = −   SST SSE SSA SSB = + + 我们有 2 2 1 1 1 ( ) ( ) r s r i i i j i SSA X X s X X   = = = = − = −   2 1 1 ( ) r s ij i j i j SSE X X X X   = = = − − +   2 2 1 1 1 ( ) ( ) r s s j j i j i SSB X X r X X   = = = = − = −  