The null hypothesis for a test of the relative contribution of two predictor variables is that adding one factor improves the prediction of variance in Y beyond that already predicted by the second factor.

Question

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The null hypothesis for a test of the relative contribution of two predictor variables is that adding one factor does not improve the prediction of variance in Y beyond that already predicted by the second factor. In other words, the two predictors do not have a significant effect on the outcome variable.

The Null Hypothesis for a Test of the Relative Contribution