A.R2=SSR/SST
B.R2=SSE/SST
C.R2=1-SSR/SST
D.R2=1-SSE/SST
E.R2=1-SSR/(SSR+SSE)
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C.對x的觀測誤差
D.x的高次項(xiàng)對y的影響
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A.數(shù)學(xué)期望為0
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E.與自變量的取值相互獨(dú)立
A.1次
B.2次
C.3次
D.4次
E.5次
A.數(shù)學(xué)期望為0
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C.方差為常數(shù)
D.方差隨因子水平的增減而增減
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D.減小樣本容量
E.使用精確分布
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