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3.Which model does not lend itself to correlation coefficient analysis?
A) Y = X + 2.
B) X = Y × 2.
C) Y – X = 2.
D) Y = X3.
The correct answer was D)
The correlation coefficient is a measure of linear association. All of the functions except for Y = X3 are linear functions. Notice that Y – X = 2 is the same as Y = X + 2.
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发表于 2008-4-1 12:27
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