For a set of random samples x1, x2, · · · , xn, the command Br = moment(x, r) can be used to evaluate the raw moments of all given order. ( )
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1.For a set of random samples x1, x2, · · · , xn, the command Br = moment(x, r) can be used to evaluate
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2.For a set of random samples x1, x2, · · · , xn, the command Br = moment(x, r) can be used to evaluate
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3.设有n维随机变量(X1,X2,…,Xn),其分布函数是指F(x1,x2,…,xn) = P{ X1 £ x1,X2 £ x2,…,Xn £ xn },其中x1,x2,…,xn,为任意实数.
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4.若X1,X2…Xn是来自总体X的一个简单随机样本,则X1,X2…Xn满足()
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5.如果X1,X2,…,Xn是n个随机变量,则称X = (X1,X2,…,Xn)为n维随机变量.
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6.= ⇔( x1= y1)∧( x2= y2) ∧...∧( xn= yn)
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7.中国大学MOOC: 如果X1,X2,…,Xn是n个随机变量,则称X= (X1,X2,…,Xn)为n维随机变量.
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8.有序n元组<, xn>。且可以简记成
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9.(X1…xn)^If(x)
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10.There are a total of 36 pieces raw materials entering a factory, and the number of random samples should