11. A multiple regression was performed on data obtained from 31 trees to predic

Question

11. A multiple regression was performed on data obtained from 31 trees to predict usable volume from the height (in feet) and the diameter (in inches) of the tree. Partial computer results are shown below. Predictor Constant Diameter Height Coef 57.988 4.7082 0.3393 SE Coef 8.638 0.2643 0.1302 6.71 17.82 2.61 Choose the best answer to fill in the blank. One should check to see if there is before fitting the model contained in this output O a dependence between height and diameter O an interaction or dependence between height and diameter O an interaction between height and diameter

Explanation / Answer

we need to check both colibnearity and interaction between diameter and heght to avoid error in the equation

therefore correct option is : an interaction or dependence between height and diameter,

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