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標題: [Econ] 如ECON有難題請內進留言(希望大家有個好o既Econ成績) [打印本頁]

作者: petergarylee 時間: 2015-4-24 07:34 AM 標題: 如ECON有難題請內進留言(希望大家有個好o既Econ成績)

I will ans Econ questions as much as I can, hope it will help u. Please try to ask your question before 2/5 as I WONT ANSWER ANY QUESTION AFTER THAT( cuz I will be a tutor during summer).

P.S. Plz give me an real question or example cuz its hard to explain the general theory in here, thx.

[ 本帖最後由 petergarylee 於 2015-4-29 12:47 AM 編輯 ]

作者: Ray159357 時間: 2015-4-24 01:41 PM

試從兩方面比較CPI同GDP deflator A)開支權數B)評估生活費用上升對住戶的影響的準確度

[ 本帖最後由 Ray159357 於 2015-4-24 01:42 PM 編輯 ]

作者: petergarylee 時間: 2015-4-24 07:44 PM 標題: 回覆 2# Ray159357 的帖子

B)CPI is a price index which only measures the prices of consumption goods and services. GDP deflator is a price index of the prices of all items in GDP, which includes C, I, G and NX. If we compare two of the price index, we can find out that the accuracy of CPI to estimate the effect of an increase in living cost to household(private sector) is higher than GDP deflator. It is because 1) CPI focus on consumer's expenditure, which directly reflect how the household will be affected by a change in general price level. 2) GDP deflator is a broader price index includes too much other factors( investment, export...) , where those factors won't immediately affect the general price level but can reflect the macro-economics change in the country. 3)(OUT OF SYLLABUS) GDP deflator only calculate every quarter and with a time lag, it is unsuitable for timely estimation of inflation, which means it can't reflect the effect of an increase in living cost immediately, thus it has a lower accuracy.

For A) , can you give me the English of 開支權數?

作者: Ray159357 時間: 2015-4-24 08:00 PM 標題: 回覆 3# petergarylee 的帖子

weighted expenditure? i guess

作者: petergarylee 時間: 2015-4-24 08:37 PM 標題: 回覆 4# Ray159357 的帖子

Sorry, I really dont understand the question, can you form another complete sentence in English to elaborate your question again?

作者: kenny1545 時間: 2015-4-25 02:47 AM

Mr Lee is a private medical doctor. He wants to expand his business. He can
raise funds by
(1) borrowing from banks.
(2) inviting partners to form a general partnership.
(3) forming a private limited company and issuing shares.
A. (1) and (2) only
B. (1) and (3) only
C. (2) and (3) only
D. (1), (2) and (3)
請問點解(3)都錯? private limited company不是可以issue shares 給家人和朋友嗎?

作者: petergarylee 時間: 2015-4-25 07:28 AM 標題: 回覆 6# kenny1545 的帖子

Mr Lee can form a private limited company but the company cant 'issue shares' as there is not legal market for him to 'issue' the shares of the company. I think the problem is on the verb 'issue' , where you can transfer the shares of the private limited company, but it is not 'issue', where 'issue' may has a meaning of 'offer the shares to the general public', which clash with the restriction of private limited company. In chinese, 'issue' has the meaning of '發行'.

[ 本帖最後由 petergarylee 於 2015-4-25 07:29 AM 編輯 ]

作者: dontaskme 時間: 2015-4-25 04:16 PM 標題: Hi, may I ask u an econ question?

A severe nuclear leakage occured in Japan in 2011. Explain how his would affect the opportunity cost of using nuclear power.

作者: dumbo101 時間: 2015-4-25 05:20 PM

CPI,GDP deflator 過100系唔系就系inflation,定系要比較舊年,increase rate

作者: petergarylee 時間: 2015-4-25 10:19 PM 標題: 回覆 8# dontaskme 的帖子

Form my understanding, a severe nuclear leakage increase the opportunity cost of using nuclear power in different way( electricity generation, weapon...). It is because the nuclear leakage crisis increase the experimental risk of using nuclear power, which the potential/real cost(destruction caused by the nuclear leakage) of using nuclear power increase, the value of using nuclear power decreased, thus the value/cost(price) of using other resources/power increase as they are more stable. Using nuclear power means you need to scarify the usage of other resources/power(the opportunity cost), when the value of them increase, the opportunity cost will increase. This is only one example, there still have a lot way to answer this question.

作者: petergarylee 時間: 2015-4-25 10:35 PM 標題: 回覆 9# dumbo101 的帖子

You should have a clear concept that inflation rate is the percentage change in the price level from one year to the next. It is correct that if the index get over 100, it means there is an inflation. Only CPI can reflect this condition accurately(as I've answered it before), where CPI is comparing the price level from the current year with last year, but GDP deflator is comparing the nominal GDP to real GDP. First GDP deflator is not comparing the price level. Second, real GDP is construct from the price level of 'base year', where the 'base year' is not necessarily to be 'last year'.

Here is the answer from me on your page(additional notes):
I still want to mention that GDP deflator is based on the 'base year' , the above question ' Year 1's GDP deflator is 100, year 2's is 110,year 3 is 100' means that only in year 2 , the price level compare to the base year is higher as the index in more than 100, thus the purchasing power of money is the lowest among the three years. Also, under most of the conditions, with only one year's GDP deflator cannot shows whether there is an inflation or a deflation.
And you are correct, there is deflation in year 3.

P.S. I think the answer in your page which answered by another guy is most likely wrong!

[ 本帖最後由 petergarylee 於 2015-4-26 07:55 AM 編輯 ]

作者: kenny1545 時間: 2015-4-26 03:42 AM

引用:

原帖由 petergarylee 於 2015-4-25 07:28 AM 發表
Mr Lee can form a private limited company but the company cant 'issue shares' as there is not legal market for him to 'issue' the shares of the company. I think the problem is on the verb 'issue' , wh ...

感謝你, 另外我想問多條
In economics, which of the following statements about capital is correct ?

A. The quantity of fixed capital cannot be changed in the short run.
B. Capital earns the highest rate of return among all factors of
production.
C. Capital is produced to satisfy consumers’ wants directly.
D. The geographical mobility of capital is greater than that of land.

option D, 如果我用雀仔同影印機比較, land 既geographical mobility唔係更高?

作者: petergarylee 時間: 2015-4-26 04:12 AM 標題: 回覆 12# kenny1545 的帖子

I think the answer is A, and are you sure D is one of the choice? As I don't think geographical mobility can be used to describe capital or land, it is used for people (labour). BTW, do you want me to explain why?

作者: kenny1545 時間: 2015-4-26 02:13 PM

引用:

原帖由 petergarylee 於 2015-4-26 04:12 AM 發表
I think the answer is A, and are you sure D is one of the choice? As I don't think geographical mobility can be used to describe capital or land, it is used for people (labour). BTW, do you want me to ...

但個model ans係D....A應該唔岩, 因為唔一定fixed capital 都可以係variable factor..

作者: surelose123456 時間: 2015-4-26 02:32 PM

For monopoly princing:
如果佢題目冇講明即mc 係upward sloping?And幾時要畫ac curve,幾時唔洗畫?

[ 本帖最後由 surelose123456 於 2015-4-26 02:41 PM 編輯 ]

作者: surelose123456 時間: 2015-4-26 02:42 PM

Why ms increase would lead to interest rate decrease?

作者: petergarylee 時間: 2015-4-26 07:08 PM 標題: 回覆 14# kenny1545 的帖子

Is that a mock from outside or your school? I think HKEAA wont get that question. 'A' can be wrong but the assumption is: In short run, with fixed capital and labour, only labour is variable. Also, I really need to clarify that 'mobility' is used to describe people(both occupational and geographical), how can a machine mobilize itself? If you really think the answer is correct, the only explanation is : You can move the capital(machine, stock) from one place to another but you can't move land, once the land is 'moved', it won't be natural resources(land) any more but turn into capital.

[ 本帖最後由 petergarylee 於 2015-4-26 07:45 PM 編輯 ]

作者: petergarylee 時間: 2015-4-26 07:40 PM 標題: 回覆 16# surelose123456 的帖子

Do you want me to explain how MS will drive down the interest rate or just the graph. I think the reason of 'MS will drive down the interest rate ' is out of the syllabus, is it? I find out that it is too hard for you to understand. Also, I can't upload the picture cuz its too big, it only allows 2000kb.

[ 本帖最後由 petergarylee 於 2015-4-26 07:54 PM 編輯 ]

作者: petergarylee 時間: 2015-4-26 07:45 PM 標題: 回覆 15# surelose123456 的帖子

Can you give me a real question as an example, it is hard to explain all the things in here.

作者: surelose123456 時間: 2015-4-26 08:32 PM

Nvm,thx.

作者: lemontastee 時間: 2015-4-26 10:44 PM

想問問
1. The unit prices of Asset B in Year 1 and 2 are $1000 and $1300 respectively.Ming used all of his wealth to purchase 100 units of Asset B in Year 1 and sold all of them in Year 2. The net interest income from Asset B was $10000 and the inflation rate was 100%.
Please explain why the following statements are correct..
(i) Ming earned a nominal return of $400 from one unit of Asset B.
(ii) The nominal rate of return of $400 from one unit of Asset B was 40%.

2. Which of the following events can most likely improve efficiency?
A. The competition from Supermarket W leads to a decrease in Supermarket P's profits. To reduce competition, Supermarket P takes over Supermarket W.
B. The government in Country B has banned all production that involved pollution.
C. The government in Country C has introduced minimum wage laws.
D. Due to the light pollution created by a department store, Mr Chan has installed a window curtain.

Why D is correct, and why A and B are wrong?

[ 本帖最後由 lemontastee 於 2015-4-26 10:51 PM 編輯 ]

作者: petergarylee 時間: 2015-4-27 05:05 AM 標題: 回覆 21# lemontastee 的帖子

Can someone tell me how can I upload a picture/photo which is larger than 2000kb?

作者: lemontastee 時間: 2015-4-27 10:37 AM 標題: 回覆 22# petergarylee 的帖子

可以用免費貼圖空間 http://imgbox.com/
http://www.imagebam.com/http://imgur.com/

作者: manvela 時間: 2015-4-27 12:03 PM

想問下change in discount rate 會唔會影響到monetary base 入面的reserves?
同埋increase in progressivity of tax係咪leads to more even income distribution?
謝謝

作者: surelose123456 時間: 2015-4-27 12:53 PM

Why general price level increase, money demand increase?
I know its because the transaction demand increase,but the asset demand will be decrease?
So,why the overall effect is that money demand increase?

作者: lemontastee 時間: 2015-4-27 10:12 PM

Wanna ask another MC Q (Ans: A)
Some people claim that a teacher using foul language in public would harm the professional image of teachers. Supposing this is true, which of the following is/are true?
(1) This may be a case of negative externalities.
(2) Based on efficiency, the authority should impose a fine on teachers who use foul language.
(3) Based on efficiency, the government should outlaw the use of foul language in public areas.
A. (1) only
B. (1), (2) only
C. (2), (3) only
D. (1), (2) and (3)

作者: shan88991122 時間: 2015-4-27 11:25 PM

hello有關money creation吾係好明
Question:Which of the follwoing may reduce the actual reserve ratio of a banking system?
A.An increase in the required reserve ratio
B.An increase in the demand for bank loan
C.An increase in the amount of cash leakage
D.An increase in the default of bank loan
(Answer is B)

thz!!!

作者: petergarylee 時間: 2015-4-29 12:07 AM 標題: 回覆 21# lemontastee 的帖子

First , nominal return(interest) rate= real return(interest) rate + inflation rate

Profit from Asset B(per unit)= $300
Interest per unit=$100
total return(nominal) per unit= $400

Also, I don't understand 1(II), whats the difference?

For 2,
a) take over of W do reduce competition but it is not necessarily be efficient to do that. It is because after taking over W, P has to increase its production capacity to maintain the profit level, but an increase in quantity produced will increase the marginal cost. As marginal cost starts to fluctuate, if P still want to increase the quantity produced, the MC may exceed MB, which then cause inefficiency.

b)Under the market mechanism, we assume that all firms produce at the efficient level(equilibrium), which means the existence of pollution is also one of the factor which is necessarily caused by efficient production. If the government ban all the production that involved pollution, which force the firms to shut down or turn to use other production method( inefficient way). This may lower down the efficiency of the country or region as a whole(Macro)

d)Light pollution causes externality to Mr Chan, where private cost of the polluter is smaller than the social cost. The installation reduce the externality by stopping the light pollution from affecting him, which then balance the private and social cost(or reduce the gap). This allows the market to produce in a more efficient level.(Can be explain by graph but I can't upload it, sorry)

also, sorry for my late reply, I was busy at work before.

[ 本帖最後由 petergarylee 於 2015-4-29 12:42 AM 編輯 ]

作者: petergarylee 時間: 2015-4-29 12:12 AM 標題: 回覆 24# manvela 的帖子

Theoretically, change in discount rate wont affect the reserve because it is the interest rate, only the change in required reserve rate will affect the amount of reserve. For the second one: maybe, there are so many possibilities, I cant explain them all, but in DSE, you better answer yes and just copy the explanation in text book . If u really want me to explain, leave me a message.

[ 本帖最後由 petergarylee 於 2015-4-29 12:45 AM 編輯 ]

作者: petergarylee 時間: 2015-4-29 12:18 AM 標題: 回覆 26# lemontastee 的帖子

Any method to adjust externality can improve or lower down the efficiency, sometimes, the method itself may have externality or it is inefficient( I think there are some explanation in text book eg the government intervention). so the second and third ans maybe correct, but it is not a must.

[ 本帖最後由 petergarylee 於 2015-4-29 12:46 AM 編輯 ]

作者: petergarylee 時間: 2015-4-29 12:29 AM 標題: 回覆 27# shan88991122 的帖子

A, C and D make the bank to maintain its minimum reserve(the required reserve) level. But in B , the condition of actual reserve is higher than required reserve. As a result, an increase in demand of bank loan reduce the amount of excess reserve to satisfy the demand, thus the actual reserve ratio decrease.

To clarify, without any clear information stating the reserve condition of the bank, we should assume the reserve is in minimum reserve level where the excess amount of deposit will be in money creation. Only B says the demand of loan increase, and the only condition that the bank can lend more is: the bank has excess reserve.

作者: petergarylee 時間: 2015-4-29 12:38 AM 標題: 回覆 25# surelose123456 的帖子

In a simple way, you can draw the MD and MS graph. Where nominal interest rate= real interest rate + inflation rate. If there is inflation, nominal interest rate will decrease . MS is always constant(only government and bank can adjust it), thus a decrease in interest rate causes MD to decrease to reach its equilibrium level. The theory of transection and asset demand of money takes more time to assume and explain . Do you want me to do that? ( it will be in a lower priority cuz it takes more time, sorry)

作者: manvela 時間: 2015-4-29 12:58 PM

but i wonder change in required reserve ratio only change the amount of required and excess reserve ? but not actual reserve ,so that there is no effect to monetary base?

作者: petergarylee 時間: 2015-4-29 06:45 PM 標題: 回覆 33# manvela 的帖子

plz have a look on reply no.27

作者: tony0038 時間: 2015-4-29 08:17 PM

短缺係唔係市場失效
點解唔係？

咁市場失效係咩？
有咩會令市場失效出現？

作者: petergarylee 時間: 2015-4-29 10:52 PM 標題: 回覆 35# tony0038 的帖子

Sorry, these kind of theoretical question(inefficient market) cant be answered in here because if I miss some points, it will cause misleading to you, plz refer to your text book. But shortage is one form of inefficient market because it is not in the equilibrium level of production, under shortage, MB> equilibrium P >MC, , which is in inefficient level of production.

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