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t/f 18. The relevant range for prediction using a regression equation is between the high and...

t/f 18. The relevant range for prediction using a regression equation is between the high and low x variables in the data set.

t/f 19. If we are trying to predict test scores based on homework grades, the test scores would be the x variable.

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18. We know that, regression predictions are valid only for the range of the independent variable used in the regression. Therefore, the relevant range for prediction using a regression equation is between the high and low x variables in the data set.

Answer : true

19. We know that, the variable we are trying to predict is always the y variable. Therefore,  If we are trying to predict test scores based on homework grades, the test scores would be the y variable.

Answer : False

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