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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Contrast variable ： ウィキペディア英語版 Contrast (statistics) In statistics, particularly in analysis of variance and linear regression, a contrast is a linear combination of variables (parameters or statistics) whose coefficients add up to zero, allowing comparison of different treatments. ==Definitions== Let $\backslash theta\_1,\backslash ldots,\backslash theta\_t$ be a set of variables, either parameters or statistics, and $a\_1,\backslash ldots,a\_t$ be known constants. The quantity $\backslash sum\_^t\; a\_i\; \backslash theta\_i$ is a linear combination. It is called a contrast if 〔Casella a Berger 2001, p. 526.〕〔Casella 2008, p. 11.〕 Furthermore, two contrasts, $\backslash sum\_^t\; a\_i\; \backslash theta\_i$ and $\backslash sum\_^t\; b\_i\; \backslash theta\_i$, are orthogonal if 〔Casella 2008, p. 12.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Contrast (statistics)」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.