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.
43
43
3.6 演習問題
c -0.074350 0.039621
整数での位置を使うなら次のようになります。
>>> df[0:2]
A B
a -0.143510 0.616050
b -1.489647 0.300774
どちらの場合も結果は
DataFrame
です。ただし、ラベルの場合には、終端が含ま
れますが、整数での場合には終端が含まれないことに注意してください。
私の助言は、整数でないラベルを行に使っているなら、整数位置は使わず、ずっと
ラベルを使い続けなさい、というものです。
3.6
演習問題
†
演習問題
3-1
クラスサイズのパラドックスのようなことが、子供に対して、家族に子供が何人い
るか尋ねる調査でも起こる。子供の多い家族の方が標本に採られやすくて、子供のい
ない家族は標本となる機会がない。
NSFG
回答変数
NUMKDHH
を用いて、家族での
18
歳以下の子供の人数の実際の分布
を作りなさい。
次に、子供に対して、家族に
18
歳以下の子供が（自分も含めて）何人いるか尋ね
る調査によるバイアスのある分布を計算しなさい。
上の
2
つの分布をプロットして、それぞれの平均値を計算しなさい。
IPython
ノー
トブック
chap03ex.ipynb
を使えば順に解いていける。
演習問題
3-2
「
2.7
分布を要約する」では、要素を足し合わせ
n
で割って標本の平均値を計算
した。
PMF
の場合でも、平均値を計算できるが、方法は少し異なる。
x
-
＝
Σ
i
p
i
x
i
ここで
x
i
は
PMF
に出現する値、
p
i
＝
PMF(x
i
)
である。同様に、分散も次のよう ...
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.