Explain regression predicts for second predictor variable

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Reference no: EM13116032

The regression of Y on X predicts?

When predicting Y, adding a second predictor variable to the first predictor variable X.

a. always increase prediction accuracy
b. increase prediction accuracy depending on the relationship between the second predictor variable and X
c. increase prediction accuracy depending on the relationship between the second predictor variable and Y
d. b and c

Reference no: EM13116032

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