August 2015
Intermediate to advanced
272 pages
5h 46m
Japanese
Content preview from Think Stats 第2版 ―プログラマのための統計入門
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.
2
1 章 探索的データ解析
しかし、説得力のある証拠、そして信頼性の高い結論が必要となる場合もあります。
そのような基準を設けた場合は、事例証拠は次のような理由で失格です。
小さすぎる標本数（
small number of observations
）
第一子の妊娠期間が長くなったとしても、その差は自然な変動幅よりもおそらく
小さいでしょう。その場合、実際に違いを確かめるには、数多くの妊娠で比較し
なければならないでしょう。
選択バイアス（
selection bias
）
この問題の議論に参加している人たちは、自分の第一子が予定日よりも遅れたの
で関心を持っているのかもしれません。その場合、このデータ選択方法が結果を
ゆがめています。
確証バイアス（
confirmation bias
）
この説を信じる人は、これを支持するような例を提供してしまうものです。この
説に疑いを持っている人は、反例を引用することが多いでしょう。
不正確さ（
inaccuracy
）
事例証拠は個人的経験に基づく話であることが多く、思い違いや事実誤認を含む
ことや、不正確に繰り返されることが多いものです。
それでは、どうすればよいのでしょうか
?
1.1
統計的なアプローチ
事例証拠のはらむ問題を解消するために、統計という道具を使いましょう。次に挙
げるようなものがあります。
データ収集（
data collection
）
本書では米国民に関して統計的に妥当な推計を行う目的のために実施された、大
規模な全米調査のデータを利用します。
記述統計学（
descriptive ...
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.