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            <video:title>ベストフィットの直線を推定する練習問題</video:title>
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            <Attribute name="description">ベストフィットの直線は，2 個のデータセット間の関係を表す直線です。この直線を使って予測を行うことができます。この直線に最適な方程式を求めるために，その傾きと y 切片を見ます。注意: このように求めた直線はただのモデルですので，常に完璧とは限りません!</Attribute>
            
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            <video:title>線形回帰による推定 (線形モデル)</video:title>
            <video:description>ベストフィットの直線は，2 個のデータセット間の関係を表す直線です。この直線を使って予測を行うことができます。この直線に最適な方程式を求めるために，その傾きと y 切片を見ます。注意: このように求めた直線はただのモデルですので，常に完璧とは限りません!</video:description>
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        <lastmod>2026-04-09T15:02:58.297466603Z</lastmod>
        
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            <Attribute name="description">ここでの散布図は，アメリカの成人の喫煙者の数を年を追って示しています。1945 年の喫煙者の数は，データ点にフィットするような傾きを持つ直線を描くことで推測できます。このようにして 20 年前の位置の直線の高さがわかります。</Attribute>
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            <video:title>ベストフィットする直線: 1945 年の喫煙</video:title>
            <video:description>ここでの散布図は，アメリカの成人の喫煙者の数を年を追って示しています。1945 年の喫煙者の数は，データ点にフィットするような傾きを持つ直線を描くことで推測できます。このようにして 20 年前の位置の直線の高さがわかります。</video:description>
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