1.One of the limitations of correlation analysis of two random variables is the presence of outliers, which can lead to which of the following erroneous assumptions? A) The absence of a relationship between the two variables, when in fact, there is a linear relationship. B) The absence of a relationship between the two variables, when in fact, there is a nonlinear relationship. C) The presence of a nonlinear relationship between the two variables, when in fact, there is a linear relationship. D) The presence of a nonlinear relationship between the two variables, when in fact, there is no relationship whatsoever between the two variables.
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发表于 2008-4-1 13:07
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