The use of data in economic models is important because
A. the model's predictive value rests on supportive evidence from real-world data.
B. models must analyze every possible angle of the problem.
C. the models are always complex in nature.
D. social problems analyzed by economists require long streams of data.
Answer: A
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An agreement between the dominant firm and the fringe members to keep output low often breaks because:
a. the fringe firms usually appropriate a larger share of the profits. b. the agreement is not self enforcing. c. the dominant firm usually appropriates a larger share of the profits. d. both have an incentive to charge a higher price for their output.
Water, when it is not tradeable among current and potential users, is often kept that way
a. by governments demanding tight control over who gets the water. b. by nature, as water cannot be easily moved from place to place in large quantities. c. to protect fish and other wildlife, rather than for any other reason. d. by monopoly owners in the private sector.
DeBeers was able to profit the most from the diamond market by selling a:
A. lot of diamonds at high prices. B. lot of diamonds at low prices. C. few diamonds at low prices. D. few diamonds at high prices.
Based on the graph showing how the subprime share of home mortgages grew rapidly before the big decline, by Q2 of 2008, the gap between adjustable mortgage rates and the share of subprime mortgages was ______.
a. the greatest it had ever been
b. the smallest it had ever been
c. narrowing
d. expanding