幾個觀念問題... - 經濟

※ 引述《myfrank2003 (法克)》之銘言：
: 1. A utility function that represents preferences:
: a) Assigns the same number to bundles that lie on the same indifference
: curve and higher number to bundles that are preferred.
: b) Assigns the smae number to bundles that lie on the same indifference
: curve and lower number to bundles that are preferred.
: c) Assigns same number to all bundles.
: d) Assigns different numbers to bundles that lie on the same indifference
: curve.
: Ans:無
: 這題題目看不太懂
: 但我猜是在說效用函數是指不同財貨組合所形成的同一條無異曲線
: 故選(D) 各位覺得呢

這題是 a
考效用函數跟無異曲線的定義


: 2. If individuals have different preferences but society's preferences
: are consistent with the aggregation of individual preferences,
: which of the following is true?
: a) All endowments are equal.
: b) There are only two individuals in the society.
: c) Society's preferences are determined by a single individual
: d) The social welfare function is Rawlisn.
: Ans:無
: 個人認為是(a) 因為當每個人稟賦相同時
: 每個人的偏好都將相同
: 故社會總偏好也會與個人偏好一致
: 那請問 (d)的答案又是甚麼呢???

這題是 c
考 Arrow's impossibility theorem
http://en.wikipedia.org/wiki/Arrow%27s_impossibility_theorem
連結給你 不知道那是什麼的話參考一下吧


: 3. The purchasing power parity approach is a more useful method
: used to compare the standard of living of different countries because:
: a) using current exchange rates, which can vary a lot, cause large
: fluctuations in output per capital among countries.
: b) current exchange rates do not take account differences in prices of basic
: goods among countries.
: c) the PPP method does not ignore differences in the prices of basic goods,
: d) all of above
: Ans:無
: 這題也不太懂
: 我只知道購買力平價說在講 e=Pd/Pf
: 可是跟這題有甚麼關聯呢??
: 麻煩各位大大幫忙解題!

這題是 c
考 PPP 的意涵


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