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  <blog_title>moremagic’s diary</blog_title>
  <blog_url>https://moremagic.hateblo.jp/</blog_url>
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    <anon>Lisp</anon>
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  <description>数学苦手なワシ。以下のページを参考に共分散を学ぶ https://mathtrain.jp/covariance ;; 国語・数学 の点数セット (define lst '((50 50) (50 70) (80 60) (70 90) (90 100))) (define (sum lst) (cond ((null? lst) 0) (#t (+ (car lst) (sum (cdr lst))))) (define (ave lst) (/ (sum lst) (length lst))) (define (first-list lst) (map car lst)) ;; 国語 (d…</description>
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  <provider_name>Hatena Blog</provider_name>
  <provider_url>https://hatena.blog</provider_url>
  <published>2018-05-29 10:23:31</published>
  <title>gaushe で共分散を計算してみる</title>
  <type>rich</type>
  <url>https://moremagic.hateblo.jp/entry/2018/05/29/102331</url>
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