Which of the following time-series components can be identified when a company has 12 weeks of data beginning January and extending through March?
A) Seasonal component
B) Random component
C) Trend component
D) Both B and C
Question 2
Interaction exists in a multiple regression model when:
A) one independent variable affects the relationship between another independent variable and the dependent variable.
B) multicollinearity is present in a regression model.
C) the regression model is overall insignificant.
D) a polynomial model used.
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