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14:49 Dec 17, 2010 |
English to French translations [PRO] Social Sciences - Human Resources / videos | |||||||
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| Selected response from: philippe vandevivere France Local time: 19:45 | ||||||
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un coefficient de correlation calculé sur 4 points a peu de valeur prédictive Explanation: when you do a regression curve on data points on a plot, ohe method optimizes a best fit curve (usually linear) by minimizing the sum of the squares of the spreads from each point to the curve, that sum is the R square, possibly translatable in french as 'la valeur R au carré' ou encore le coefficient de correlation |
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Bien sûr, vous n'appliquerez pas un R au carré à seulement 4 points (formule ironique) Explanation: Le coefficient de corrélation au carré est le "R au carré". Il donne un indice de détermination linéaire entre les points lorsque ceux-ci sont statistiquement nombreux, mais sûrement pour 4 points seulement ! -------------------------------------------------- Note added at 21 mins (2010-12-17 15:10:46 GMT) -------------------------------------------------- (Dans le contexte) Bien sûr un R au carré calculé sur 4 points ne donne pas une tendance |
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