[閒聊] 關務統計
大家統計 3因子anova 那題都怎麼算阿
效應是要把 A(+)、A(-)、B(+)、....BC(+,-)、BC(+,+)、BC(-,+)、BC(-,-)
這些全部算出來嗎@@?
還有我最後算出來SSB、SSC、SSAB、SSBC都顯著@@
感覺怪怪的
不知道算法有沒有錯...
抽樣最後一題又是討厭的M未知
剛開始弄比率群集算,發現比例P的信賴區間算出來居然是(負零點多到一點多)
這樣有寫跟沒寫一樣...
後來只好用其他資料估計M=3800
有人有其他的算法嗎@@?
--
※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 123.193.98.142
※ 文章網址: http://www.ptt.cc/bbs/Examination/M.1397992835.A.939.html
→
04/20 19:30, , 1F
04/20 19:30, 1F
推
04/20 19:34, , 2F
04/20 19:34, 2F
靠左靠右的話
就是因為原本靠右走的人本來就比較多
當然車禍"件數"就比較高
所以不能說靠右走比較容易出車禍
應該要看靠右走的人出車禍的"比例"才對
(這讓我想到以前看新聞都說統x客運一年車禍多
結果就有人說因為他們一年發車也多,所以不能這樣比較)
另一題的話也不能減少開支
因為兩個月對獎一次的話
大家累積的發票也比較多
稍微算一算就發現兩種情況的期望獎金會一樣
推
04/20 19:40, , 3F
04/20 19:40, 3F
推
04/20 19:52, , 4F
04/20 19:52, 4F
那題的話我是算
Y hat = N * Y bar (Y bar題目給的)
Var(Y hat)=Var(N*Y bar)=Var((X hat/X bar)*Y bar)
=(X hat)^2 * Var(r)
不知道是不是這樣算@@?
最捶心肝的是我這張考卷所有要算樣本數n的題目我都只算到n0...
忘記後面還有一步是 n= n0/(1+n0/N) .....
居然犯這種離譜的錯誤真的想賞自己兩巴掌QQ
推
04/20 20:10, , 5F
04/20 20:10, 5F
推
04/20 20:25, , 6F
04/20 20:25, 6F
※ 編輯: Edward31 (123.193.98.142), 04/20/2014 20:31:06
推
04/20 20:37, , 7F
04/20 20:37, 7F
→
04/20 20:42, , 8F
04/20 20:42, 8F
推
04/20 20:54, , 9F
04/20 20:54, 9F
→
04/20 20:56, , 10F
04/20 20:56, 10F
→
04/20 21:24, , 11F
04/20 21:24, 11F
→
04/20 22:05, , 12F
04/20 22:05, 12F
→
04/20 22:06, , 13F
04/20 22:06, 13F
→
04/20 22:09, , 14F
04/20 22:09, 14F
→
04/20 22:10, , 15F
04/20 22:10, 15F
→
04/20 22:10, , 16F
04/20 22:10, 16F
→
04/20 22:10, , 17F
04/20 22:10, 17F
→
04/20 22:13, , 18F
04/20 22:13, 18F
推
04/20 22:17, , 19F
04/20 22:17, 19F
推
04/20 22:17, , 20F
04/20 22:17, 20F
謝謝糾正!我真的沒救了QQ
→
04/20 22:19, , 21F
04/20 22:19, 21F
→
04/20 22:19, , 22F
04/20 22:19, 22F
推
04/20 22:21, , 23F
04/20 22:21, 23F
→
04/20 22:21, , 24F
04/20 22:21, 24F
→
04/20 22:23, , 25F
04/20 22:23, 25F
→
04/20 22:24, , 26F
04/20 22:24, 26F
→
04/20 22:26, , 27F
04/20 22:26, 27F
→
04/20 22:26, , 28F
04/20 22:26, 28F
→
04/20 22:27, , 29F
04/20 22:27, 29F
→
04/20 22:27, , 30F
04/20 22:27, 30F
→
04/20 22:28, , 31F
04/20 22:28, 31F
→
04/20 22:32, , 32F
04/20 22:32, 32F
※ 編輯: Edward31 (123.193.98.142), 04/20/2014 22:33:35
→
04/20 22:33, , 33F
04/20 22:33, 33F
→
04/20 22:34, , 34F
04/20 22:34, 34F
推
04/20 22:37, , 35F
04/20 22:37, 35F
→
04/20 22:39, , 36F
04/20 22:39, 36F
→
04/20 22:40, , 37F
04/20 22:40, 37F
推
04/20 22:40, , 38F
04/20 22:40, 38F
推
04/20 22:43, , 39F
04/20 22:43, 39F
→
04/20 23:32, , 40F
04/20 23:32, 40F
→
04/20 23:34, , 41F
04/20 23:34, 41F
→
04/20 23:35, , 42F
04/20 23:35, 42F
→
04/20 23:37, , 43F
04/20 23:37, 43F
→
04/20 23:52, , 44F
04/20 23:52, 44F
→
04/21 00:09, , 45F
04/21 00:09, 45F
推
04/21 01:23, , 46F
04/21 01:23, 46F
→
04/21 01:24, , 47F
04/21 01:24, 47F
→
04/21 01:25, , 48F
04/21 01:25, 48F
推
04/21 01:28, , 49F
04/21 01:28, 49F
→
04/21 01:30, , 50F
04/21 01:30, 50F
推
04/21 01:32, , 51F
04/21 01:32, 51F
→
04/21 01:33, , 52F
04/21 01:33, 52F
推
04/21 01:57, , 53F
04/21 01:57, 53F
→
04/21 01:59, , 54F
04/21 01:59, 54F
推
04/21 09:20, , 55F
04/21 09:20, 55F
推
04/21 09:37, , 56F
04/21 09:37, 56F
→
04/21 10:00, , 57F
04/21 10:00, 57F
推
04/21 10:26, , 58F
04/21 10:26, 58F
→
04/21 10:27, , 59F
04/21 10:27, 59F
推
04/21 10:44, , 60F
04/21 10:44, 60F
→
04/21 10:51, , 61F
04/21 10:51, 61F
推
04/21 11:14, , 62F
04/21 11:14, 62F
推
04/21 11:20, , 63F
04/21 11:20, 63F
→
04/21 11:22, , 64F
04/21 11:22, 64F
推
04/21 11:57, , 65F
04/21 11:57, 65F
推
04/21 18:14, , 66F
04/21 18:14, 66F
→
04/21 18:15, , 67F
04/21 18:15, 67F
→
04/21 18:16, , 68F
04/21 18:16, 68F
→
04/21 18:18, , 69F
04/21 18:18, 69F
推
04/21 18:27, , 70F
04/21 18:27, 70F
推
04/21 22:08, , 71F
04/21 22:08, 71F
推
04/21 23:52, , 72F
04/21 23:52, 72F
推
04/22 08:31, , 73F
04/22 08:31, 73F
討論串 (同標題文章)