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Regarding a regression model, which of the following description is...

Regarding a regression model, which of the following description is

wrong? Say x is predictor and y is the outcome.


  1. Without the regression model, the best prediction of y is the mean of y.
  2. The amount of variability in y that can be explained
  3. The regression line does not always pass through the point (X, Y)
  4. The regression models can have more than three predictors at the same

time.

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