[商管] [統計] Chebyshev

作者Nocp (靠~運氣不如靠努力)

看板Grad-ProbAsk

標題[商管] [統計] Chebyshev

時間Sat Feb 13 16:52:12 2010

Let X have Poisson distribution with u =100 Use Chebyshev to determine a lower bound for P(75 < X < 125) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~` a lower bound 請問此處的意思是要尾點值? 還是要下界的機率?! 想不通 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 211.76.41.62

推 a10019036:應該是求下界機率...是0.84?? 02/13 17:03

推 ayabf:因為chebyshev會寫成P(｜X-100｜<=K*西葛鎷) >=1-1/k^2 02/13 17:11

→ ayabf:所以你也只能求下界 02/13 17:11

推 a10019036:我解法跟樓上一樣 02/13 17:12

→ NCUflywind:我傳給你的檔案有呀= = 02/13 17:55

→ Nocp:尷尬~新年就發生鬼打牆... 02/13 18:25

→ NCUflywind:晚點上線再傳一次~你可能沒注意到哈哈 02/13 20:04

→ Nocp:感謝~那時候也是這樣解...指是不了解意思! 懂了...新年快樂! 02/13 22:18

→ goshfju:Chebyshev's Inequality 就是用來找機率的界限 02/14 03:45