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收起看板(734)
Re: [程式] R語言中ID排序編號
[ Statistics ]6 留言, 推噓總分: 0
作者: gsuper - 發表於 2011/01/25 22:26(13年前)
3Fgsuper:是阿 7000萬筆剛好有一點點SWAP , 若加上許多資料的column01/25 23:43
4Fgsuper:記憶體就爆了 , 之前B大的方法是再資料 sort 上比較慢01/25 23:44
5Fgsuper:比較理想的做法還是 sql 建 index01/25 23:44
[程式] R語言中ID排序編號
[ Statistics ]12 留言, 推噓總分: +2
作者: XYH - 發表於 2011/01/25 19:11(13年前)
11Fgsuper:可以問一下有幾筆資料嗎?  很好奇怎麼會跑這麼久01/25 22:18
[問題]t-test問題
[ Statistics ]9 留言, 推噓總分: +1
作者: sleepygirl - 發表於 2011/01/21 14:16(13年前)
1Fgsuper:你需要 "正常人標準化測驗分數"01/21 20:30
2Fgsuper:另一可能性 , 是已知這個測驗的正常人之平均分數01/21 20:32
3Fgsuper:直接用 one-sample t test01/21 20:32
6Fgsuper:所以Y大的意思是 直接對 0 做檢定就可以了嗎?01/22 00:43
[問題] 這個R function 該如何使用?
[ Statistics ]10 留言, 推噓總分: +3
作者: hasaki - 發表於 2011/01/19 12:23(13年前)
2Fgsuper:為什麼不直接用 summary() ?01/20 15:13
4Fgsuper: for(i in 1.:nycat) 這個寫法很有趣01/20 23:47
6Fgsuper:我之前寫回圈之前都會寫一行 " i <- 1 ; "01/23 03:30
7Fgsuper:有了那個點就不用寫 i <- 1;01/23 03:31
10Fgsuper:真的ㄟ 更好奇那個"."事幹啥用的了01/23 16:47
[問題] 用p值 比較兩個數之間是否有差異
[ Statistics ]10 留言, 推噓總分: 0
作者: Lr1 - 發表於 2011/01/18 17:17(13年前)
7Fgsuper:檢定的流程 1.拿到Raw data整理好 2.計算指標變數01/18 21:41
8Fgsuper:3.把指標變數再計算成 test statistic 4.根據假設模型查表01/18 21:42
9Fgsuper:你說的兩三個數字大概是在步驟2 or 301/18 21:42
10Fgsuper:請先把 Raw data 找出來01/18 21:43
[程式] R 取消覆蓋的線
[ Statistics ]6 留言, 推噓總分: +1
作者: rockken - 發表於 2011/01/14 17:58(13年前)
4Fgsuper:我覺得 R 的 Venn`s diagram 太陽春 , 或許考慮用 excel01/16 16:28
5Fgsuper:比較漂亮01/16 16:28
[問題] odds ratio
[ Statistics ]6 留言, 推噓總分: +1
作者: jack52014 - 發表於 2011/01/10 16:44(13年前)
1Fgsuper:是最基本的 oddsratio.Wald 嗎? (我猜的)01/10 18:30
[問題] 不好意思打擾一下..
[ Statistics ]7 留言, 推噓總分: 0
作者: laer7621 - 發表於 2011/01/09 16:24(13年前)
6Fgsuper:講小妹在付個相簿才有機會01/10 00:42
[問題] 相關 與 迴歸 方向不ㄧ致
[ Statistics ]4 留言, 推噓總分: +2
作者: RungtaiStudy - 發表於 2011/01/05 12:09(13年前)
3Fgsuper:你是不是在excel , 跑回歸的時候先把 X軸 放進去了?01/05 13:14
[問題] 該選擇何種統計方式
[ Statistics ]2 留言, 推噓總分: +2
作者: resolutekira - 發表於 2011/01/04 18:53(13年前)
1Fgsuper:海水能泡茶? 酷01/04 21:43