(2009年考试真题)国内生产总值(GDP)是指一个国家(或地区)所有()在一定时期内生产活动的最终成果。
A.本国居民
B.国内居民
C.常住居民
D.常住居民但不包括外国人
月期国库券的真实利率。事后真实利率(近似)为r3t=i3t-inft,其中i3t是3月期国库券利率,inft是年通货膨胀率[Mankiw(1994,Section6.4)]。存货变化Ainven,是当年的存货投资,将civen也就是GDP的变化联系起来的存货投资的加速数模型为:
其中,β1>0[比如参见Mankiw(1994,Chapter17)。
(i)利用INVEN.RAW中的数据估计这个加速数模型。以通常格式报告结果并解释方程含义。β1是统计上大于0的吗?
(ii)如果真实利率上升了,那么持有存货投资的机会成本上升,所以真实利率上升将导致存货下降。把真实利率加进加速数模型并讨论所得到的结论。
(iii)真实利率的水平值形式比其一阶差分形式Δr3t更有效吗?
Which of the following is a good gauge of economic progress?
A.the growth rate of real GDP per person, but not the level of real GDP per person
B.the level of real GDP per person and the growth rate of real GDP per person
C.neither the level nor the growth rate of real GDP per person
D.the level of real GDP per person, but not the growth rate of real GDP per person
When one country's potential GDP is higher than its real GDP, this means ______.
A.its exports are higher than its imports.
B.inflation is getting worse.
C.there exists some unemployment.
D.None of the above.