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In the Quadratic Regression Model y=β0+β1X1+β2X12+ε\mathrm { y } = \beta _ { 0 } + \beta _ { 1 } X _ { 1 } + \beta _ { 2 } X _ { 1 } ^ { 2 } + \varepsilon

question 7

Multiple Choice

In the quadratic regression model y=β0+β1X1+β2X12+ε\mathrm { y } = \beta _ { 0 } + \beta _ { 1 } X _ { 1 } + \beta _ { 2 } X _ { 1 } ^ { 2 } + \varepsilon
If the term ?2 is ___________ zero,then the parabola opens ____________.


Definitions:

IUPAC Name

The systematic naming of chemical substances as per the rules established by the International Union of Pure and Applied Chemistry.

Primary Alcohol

An organic compound with a hydroxyl group (-OH) attached to a primary carbon atom.

Secondary Alcohol

An alcohol in which the hydroxyl (-OH) group is attached to a carbon atom that is connected to exactly two other carbon atoms.

Tertiary Alcohol

An alcohol in which the hydroxyl group (-OH) is attached to a carbon atom that is connected to three other carbon atoms.

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