[問題] 實務上如何用模擬來證明不偏性和有效性?
假設我們有兩個估計量f(x1,x2,....,xn)和
g(x1,......,xn),其中x1,.....,xn為
一組來自log logistic (α,β)的樣本,
問題來了,那我們要怎麼用模擬的方式來說明,
估計量f(x1,x2,....,xn)和估計量g(x1,x2,....,xn)
是α的不偏估計量(或是說比較兩者的不偏性),
以及兩個估計量的有效性呢?
目前的想法是:
產生一組n個來自log logistic (α,β)的隨機樣本,
再用這組樣本去bootstrap分別計算出
f的標準差σ1和g的標準差σ2
建立95%的信賴區間C.I.1和C.I.2
如果C.I.1或C.I.2有蓋住α,則說明估計量f或g對於α有不偏性,
有效性則去比σ1和σ2的大小,越小越有效,
不知這樣的想法合理嗎?
還是有其他更好的作法?
跪求統計版專業的統計專家解惑?謝謝
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