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Consider the following multiple regression models (a) to (d) below. DFemme = 1 if the individual is a female, and is zero otherwise; DMale is a binary variable which takes on the value one if the individual is male, and is zero otherwise; DMarried is a binary variable which is unity for married individuals and is zero otherwise, and DSingle is (1-DMarried) . Regressing weekly earnings (Earn) on a set of explanatory variables, you will experience perfect multicollinearity in the following cases unless:
Annual Interest Rate
The percentage increase in money charged per year for the use of borrowed funds or for delaying the repayment of a debt.
Interest Rate
The cost of borrowing money or the reward for saving, usually expressed as a percentage of the principal amount per period.
Economic Profit
The return flowing to those who provide the economy with the economic resource of entrepreneurial ability; the total revenue of a firm less its economic costs (which include both explicit costs and implicit costs); also called “pure profit” and “above-normal profit.”
X-Inefficiency
The difference between actual output and the maximum possible output that could be achieved with the same input of resources, due to inefficiencies within a firm.
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