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Which of the following are true about regression with one predictor variable (often called "simple regression)? Check all that apply

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Which of the following are true about regression with one predictor variable (often called "simple regression)? Check all that apply. The regression equation is the line that best fits a set of data as determined by having the least squared error. ? The slope describes the amount of change in Y for a one-unit increase in X. ? After conducting a hypothesis test to test that the slope of the regression equation is nonzero, you can conclude that your predictor variable, X, causes Y.