An independent variable can be included in a regression model:?
A. ?when it affects y and is uncorrelated with all of the independent variables of interest.
B. ?when it does not affect y and is uncorrelated with all of the independent variables of interest.
C. ?when it affects y and is correlated with all of the independent variables of interest.
D. ?when it does not affect y and is correlated with all of the independent variables of interest.
Answer: A
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Answer the following statement true (T) or false (F)
Refer to the scenario above. The demand for Sporty's soccer balls is 2,500 units if ________
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