January 2020
Beginner to intermediate
728 pages
10h 26m
Japanese
Content preview from データサイエンス設計マニュアル
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.
6.2 可視化の審美眼の育成 153
図 6 -6 同じ財務時系列データを示す 3 種類のグラフ。状況を最も正確に表現しているのはどれか
嘘
係数は機械的に計算できるものではない。グラフを読み取るときには、誰がなぜ作ったのかを知ること
が大切だ。意図を理解していれば、グラフに織り込まれた誤解へ誘導しようとするメッセージに気付きや
すい。
6.2.3 チャートジャンクの最小化
余分な視覚効果は、データが伝えようとしているメッセージから見る人の注意をそらす。よくできたグラ
フでは、データはチャートジャンクではなく、ストーリーを語る。
図 6 -7 は、苦境に陥りつつある企業の月別販売成績を表している。このグラフが採用している棒グラフと
いう形式は、時系列データの表示方法として一般的なものであり、標準的なグラフパッケージの通常の（お
図 6 -7 販
売実績の月別時系列データ。この時系列データの棒グラフを改善/単純化するためにはどうすれ
ばよいか
154 6 章 データの可視化
図 6 -8 データ以外の要素を取り除いて図 6
-7 を少しずつ単純化する
そらくデフォルト）オプションを使って描かれている。
しかし、余分な要素を取り除いてグラフを単純化すれば、データをもっと目立たせることができるのでは
ないだろうか。実際に
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.