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112年 - 112 身心障礙特種考試_三等_電力工程:工程數學#113948
> 試題詳解
20 隨機變數 X 的變異數(variance)等於 1。若Y = -4X+1,則 X 和 Y 的共變異數(covariance)為何?
(A)1
(B)4
(C)-2
(D)-4
答案:
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統計:
A(0), B(0), C(1), D(2), E(0) #3093423
詳解 (共 1 筆)
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1. 題目解析 題目要求我們計算隨機變...
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