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CFA Level I：Economics - The Firm and Market Structures 精选题和学习要点
. l: n& D/ @! z! L6 q, K o) vLearning Outcome Statements (LOS) % Q' v8 Z3 b( R) b: x s
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6. The following equations have been developed for a company:. x: x' a: A, p
- w% k8 O) B4 E J7 kThe profit maximizing output for this firm (in units) is closest to:
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B. 8
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登录回复后可见：答案和详解% T3 z& |: z n: V; w0 K! V
Answer：A0 n" N( l' r* ^+ U+ Y+ Q
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% M0 d! `3 \2 C* @4 e2 l G9 z) n, ^/ z7. Consider the following data for a firm operating in perfect competition.
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[8 N6 r" Y6 b ~; P) F/ QThe firm’s profit-maximizing output ( in units) is most likely: 3 H7 c6 P5 a% n2 F6 U
A. 21
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C. in excess of 24 e9 z) S! t3 }$ v: w0 u
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; U' a T: l/ y V8. Which of the following statements concerning market structure and Herfindahl-Hirschman Index (HHI) is most accurate? 6 g' C( \9 y1 N6 S
A. HHI is a useful measure of potential barriers to entry
& L k( V8 Q$ v" x" F9 eB. Low control over prices is characteristic of oligopolies
4 C9 l5 T8 S9 {8 |7 @0 U& yC. An HHI value of 0.006 indicates that a market is highly competitive
0 X$ N# f/ H+ a/ G X) q, c9 V+ FAnswer：C; the HHI value of 0.006, which is very smaller, means that the concentration of this market is low, so it is highly competitive. 3 T# P0 g9 p+ }
A is incorrect; HHI does not take the possibility to entry into account, so it’s not a useful measure of potential barriers to entry. 7 V. _9 K8 n7 \ @* P
B is incorrect; oligopolies have highly control over prices. 1 l1 ]8 K+ @; T( A
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# j5 m5 p6 H8 A- a5 e0 g9. In perfectly competitive industries, what is the most likely long-run effect of a permanent decrease in demand?
1 `& m- | X- l* L% s! c! |A. Price decreases
}4 N# ~" h7 A# g+ v4 XB. Firms incur economic losses
y8 T( d9 u$ uC. The number of firms decrease
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10. As compared with acting independently, a group of oligopolistic companies operating with perfect cooperation will most likely experience an increase in: ! q: z0 b2 s$ ^$ z
A. Both output and prices . p! V+ h; @7 L9 M
B. Output and a decrease in prices ; u% ~% W0 k6 V) G
C. Prices and a decrease in output# J7 ?" B# J# z! q
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' V8 I& d4 z# `4 {$ `. S& H P关注：这里是华尔街（ID:CFA-online）公众号，每天读点金融，离梦想近一点！
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发表于 2016-1-27 09:59:00
发表于 2016-3-8 09:52:07
