A stock is a measure defined:
A. in real terms.
B. at a point in time.
C. per unit of time.
D. in nominal terms.
Answer: B
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Refer to the information provided in Figure 2.4 below to answer the question(s) that follow.
Figure 2.4According to Figure 2.4, an increase in unemployment may be represented by the movement from
A. B to A. B. A to C. C. C to D. D. B to D.
If there are 500 firms in an industry, and the four-firm concentration ratio is 90 percent, then
a. 496 firms account for the remaining 10 percent of sales b. the industry must be monopolistic competition c. the 4 firms each have 90 percent market share d. the top four firms are a monopoly e. the leading four firms receive 10 percent of industry profit
When deciding whether to engage in an activity or how much to do, people should follow:
A. the principle of microeconomics. B. the principle of macroeconomics. C. the marginal principle. D. the law of supply and demand.
Testing for the random receipt of treatment
A) is not possible, in general. B) entails testing the hypothesis that the coefficients on W1i, …, Wri are non-zero in a regression of Xi on W1i, …, Wr. C) is not meaningful since the LHS variable is binary. D) entails testing the hypothesis that the coefficients on W1i, …, Wri are zero in a regression of Xi on W1i, …, Wr.