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In the Quadratic Regression Model Y = β0 + β1X1

Question 35

Multiple Choice

In the quadratic regression model y = β0 + β1X1 + β2X12 + ε, if the term β2 is ________ zero, then the parabola opens ________.


A) less than, upward
B) greater than, upward
C) greater than, either upward or downward
D) less than, either upward or downward
E) equal to, downward

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