For the Regression Equation Q = 100 - 10X

question 9

Multiple Choice

For the regression equation Q = 100 - 10X + 0.25X²,which of the following statements is true?

• A)X² is the more important variable because it is positive.
• B)When X decreases by one unit,Q decreases by 10 units.
• C)When X increases by 10 units,Q decreases by 1 unit.
• D)The change in Q associated with a one unit increase in X depends on the initial level of X.

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