10.Which of the following statements about the correlation coefficient is least accurate? A) The correlation coefficient can vary between -1 and +1. B) If the regression line is flat and the observations are dispersed uniformly about the line, the correlation coefficient will be + 1. C) If the correlation coefficient is negative, it indicates that the regression line has a negative beta. D) The correlation coefficient describes the strength of the relationship between the X variable and the Y variable.
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发表于 2008-4-1 13:01
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