[商管] [統計]-點估計

看板Grad-ProbAsk作者 (Jusimi)時間15年前 (2010/03/16 01:17), 編輯推噓1(101)
留言2則, 1人參與, 最新討論串1/3 (看更多)
A random sample X1…Xn is drawn from a population with probability density function f(x|θ)=(2+θ)/2, -1<x<1; -1<θ<1. i. Find the method of moments estimator ofθ, ^θ ii. Find the bias, bias=E(^θ)- θ, and the variance, var=Var(θ), of the above estimator. Then, show this estimator is consistent. 希望大家幫我解答!!!感激不盡~~~~~~ -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.138.227.22

03/16 02:04, , 1F
這題的bias是0嗎@@? Var(^日)=(-2-11日-5日^2)/5n ?
03/16 02:04, 1F

03/16 02:05, , 2F
想睡了草草算一下 不是很確定
03/16 02:05, 2F
文章代碼(AID): #1Bdck-mS (Grad-ProbAsk)
文章代碼(AID): #1Bdck-mS (Grad-ProbAsk)