A.均值大于中位數(shù) B.均值小于眾數(shù) C.中位數(shù)小于眾數(shù) D.均值等于眾數(shù) E.均值小于中位數(shù)
A.數(shù)學(xué)期望為0 B.標(biāo)準(zhǔn)差為1 C.方差為1 D.偏度系數(shù)為0 E.峰度系數(shù)為3
A.數(shù)學(xué)期望為p B.數(shù)學(xué)期望為q C.方差為p+q D.方差為pq E.方差為p/q