【初級編B】 回帰分析とロジスティック回帰分析 StatsGuild Inc. index-1 Chapter 1 相関係数 ...................................................................................................................................................1 Chapter 2 回帰分析 ................................................................................................................................................ 43 1.1.1 相関係数の概要 ..............................................................................................................................2 1.1.2 散布図................................................................................................................................................3 1.1.3 正の相関、負の相関、無相関 ...................................................................................................4 1.2.1 ピアソンの相関係数 .....................................................................................................................7 1.2.2 相関係数の検定 ..............................................................................................................................9 1.2.3 スピアマンの相関係数.............................................................................................................. 10 1.3.1 疑似相関と偏相関係数.............................................................................................................. 12 1.4.1 使用できる変数の尺度.............................................................................................................. 14 1.4.2 相関係数による分析の実行手順............................................................................................ 16 1.4.3 サンプルデータの確認.............................................................................................................. 17 1.4.4 オプションの設定 ...................................................................................................................... 19 1.5.1 単純散布図の作成 ...................................................................................................................... 22 1.5.2 単純散布図の編集 ...................................................................................................................... 25 1.6.1 ピアソンの相関係数の計算..................................................................................................... 28 1.6.2 ピアソンの相関係数の結果の解釈 ....................................................................................... 30 1.6.3 相関行列テーブルの編集 ......................................................................................................... 33 1.7.1 スピアマンの相関係数の計算 ................................................................................................ 35 1.7.2 スピアマンの相関係数の結果の解釈 ................................................................................... 37 1.8.1 偏相関係数の計算 ...................................................................................................................... 39 1.8.2 偏相関係数の結果の解釈 ......................................................................................................... 41 2.1.1 回帰分析の概要 ........................................................................................................................... 44 2.1.2 回帰式............................................................................................................................................. 46 2.1.3 回帰式の説明力 ........................................................................................................................... 48 2.1.4 残差 ................................................................................................................................................. 49 2.1.5 多重共線性.................................................................................................................................... 50 2.1.6 独立変数の自動選択 .................................................................................................................. 53 2.1.7 使用できる変数の尺度.............................................................................................................. 56 2.1.8 ダミー変数.................................................................................................................................... 57 2.1.9 回帰分析の実行手順 .................................................................................................................. 58
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