June 2024
Intermediate to advanced
200 pages
4h 46m
Japanese
Content preview from Python2年生 データ分析のしくみ 第2版 体験してわかる！会話でまなべる！
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Chapter
3
86
09
LESSON
平均値以外の代表値である「中央値」や「最頻値」について見ていきましょう。
平均値を代表といって
い い の？
代表値としてよく使われる平均値だけれど、代表してるとはいえない
場合もあるんだよ。
そんなことあるの？
例えば、この図は「
1
世帯当たり、現在どれだけ貯蓄があるか」を表した
図なんだ。これを見る と「 貯蓄の平均値」は「
1901
万円」となっている。
総務省統計局の調査データだよ。
※ これは 2022 年のデータです。最新版のデータは、次の URL にあります。https://www.stat.go.jp/data/sav/sokuhou/nen/index.html
＜要約＞家計調査報告（貯蓄・負債編）− 2022 年（令和４年）平均結果−（二人以上の世帯）
87
平均値を代表といっていいの？
LESSON
09
うっひゃ〜〜！ わたしらとどれだけ差があるんだよ。
確かにケタ外れだわ。
すごい大金持ちがいるから、平均値が高いほうへ引っ張られていたとい
うわけだ。でもこんな超富裕層って、一般の国民からは外れた特殊な人
たちのことじゃないの？ と思えるよね。そこで、このような値のこと
を「 外れ値」というんだ。
「平均値」は、このように「外れ値の影響を受けやすい」という性質があります。 ...
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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.