In the presence of heteroskedasticity, and assuming that the usual least squares assumptions hold, the OLS estimator is
A) efficient.
B) BLUE.
C) unbiased and consistent.
D) unbiased but not consistent.
Answer: C
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The figure above shows the costs for the typical grower in the perfectly competitive turnip market. Currently, the price is $1,000 for a ton of turnips. In the long run, the market supply of turnips will ________
A) decrease and the price of a ton of turnips will fall to $600 B) increase and the turnip grower's economic profit will increase C) increase and the turnip grower's economic profit will decrease D) decrease and the price of a ton of turnips will rise to $1,200
A consumer's demand for CDs can be represented by a line with slope -b and intercept a. If the current price of CDs is $P, then the ratio of consumer surplus to total expenditures on CDs equals
A) (a - P)(a - bP). B) 1/2(a - P)(a - bP). C) D(a - bP). D) (a - P)/P. E) (a/b - P)/(2P).