A.y和x都是隨機變量
B.y是隨機變量,x是確定性變量
C.y是確定性變量,x是隨機變量
D.y和x都是確定性變量
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A.屬性化
B.數(shù)量化
C.同質(zhì)化
D.差異化
A.等于0
B.等于總平方和
C.完全由觀測的隨機誤差引起
D.完全由各因子水平的差異引起
A.必然事件
B.不可能事件
C.小概率事件
D.大概率事件
A.原假設(shè)為真的條件下檢驗統(tǒng)計量的概率分布
B.備擇假設(shè)為真的條件下檢驗統(tǒng)計量的概率分布
C.觀測變量的總體概率分布
D.觀測變量的樣本分布
A.α
B.β
C.1-α
D.1-β
最新試題
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