[問題] 成大工管統計考古題
Consider the expression Cov(aX,bY+c) for random variables X and Y , where a,b
and c are constants.
(a)Show that Cov(aX,bY+c) = abCov(X,Y)
(b)Give the geometric interpretation for the equality given in (a).
請問這兩題要怎麼寫才算比較詳盡呢?
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12/17 18:00, , 1F
12/17 18:00, 1F