April 2014
Beginner to intermediate
830 pages
15h 21m
Chinese
Content preview from Mathematica 錦囊妙計
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
478
|
第十二章
但問題是咖啡因與智商的線性關係是否僅為巧合，有可能聰明人只是碰巧喜歡喝咖啡，
而並非喝咖啡會使你變更聰明。為了做進一步的調查，我們將測試人員隨機分為兩組，
其中一組服用咖啡因，另一組僅服用安慰劑，兩組試驗對象均使用雙盲方法（double-
blind method），並且假設在其他控制變因完全相同之下，在服完藥劑後進行智商測驗。
以下列出實驗數據，每個子串列的第一個元素表示試驗對象是否服用咖啡因，值 1 代表
服用咖啡因、值 0 代表服用安慰劑；而第二個元素為測試者智商。[Page-480]
使用
ANOVA
套件進行分析：
上 式 分 析 結 果 中，
FRatio
與
PValue
是 較 重 要 的 指 標，
FRatio
值 愈 高 相 關 性 愈 高，
PValue
值愈低相關性愈高。
PValue
指的是在虛無假設（null hypothesis）情況下關聯性
完全為巧合的機率，通常只要
PValue
小於 0.05，便可排除虛無假設的情況。
ch12.indd 478 2014/4/7 下午 12:42:16
12.11 以變異數分析（ANOVA）進行統計顯著性（Statistically Significant）測試
|
479
討論說明
你也許會好奇為什麼 ANOVA 的輸出格式如此獨
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.