[問題]輔大經研去年考古題
輔大經研去年入學考題
問題如下 麻煩高手們幫忙囉 感恩
The random variables X1,X2,....X2n-1 are identically
and independently distributed with mean μ and
variance σ^2 .
What is the covariance of X1+X2+...+Xn and Xn + Xn+1 +...+ X2n-1?
答案是 σ^2 (why?)
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