题目内容
（请给出正确答案）
关。
(ii)用迭代的科克伦-奥卡特方法重新估计这个模型。长期倾向的新估计值是多少？
(iii)用迭代C0求出LRP的标准误。(这要求你估计一个修正方程。) 判断LRP估计值在5%的水平上是否统计显著异于1？
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更多“(i)利用WAGE PRC.RAW中的数据，估计习题11.5…”相关的问题
(i)求出样本中的平均工资和平均IQ。IQ的样本标准差是多少？(总体中的IQ已标准化为平均值是100，标准差是15。)
(ii)估计一个简单回归模型，其中IQ提高一个单位导致wage变化相同的数量。利用这个模型计算IQ提高15个单位时，工资的预期变化。10能够解释大多数工资波动吗？
(iii)现在再估计一个模型，其中IQ提高一个单位对工资具有相同的百分比影响。如果IQ提高15个单位，预期工资提高的百分比大约是多少？
利用CPS78_85.RAW中的数据。
(i)你怎样解释教材方程(13.2)中y85的系数？对它有没有一种令人感兴趣的解释？(这里你要小心;你必须说明交互项y85·educ和y85·female。)
(ii)保持其他因素不变，你估计一个接受了12年教育的男子的名义工资增加了多少个百分点？给出一种回归以得到这个估计值的一个置信区间。[提示：为了得到这个置信区间，要用y85-(educ-12)取代y85-educ;]
(iii)令所有的工资均以1978年美元计算，重新估计教材方程(13.2)。具体地说，定义1978年的真实工资为rwage=wage，而1985年的真实工资为rwage=wage/1.65。现在估计教材(13.2)时用log(rwage)代替log(wage)。哪些系数将不同于教材方程(13.2)中的系数？
(iv)解释为什么你在第(iii)部分中的回归给出的R²不同于教材方程(13.2)所给出的R。
(提示：两个回归的残差，从而残差平方和是相同的。)
(V)试描述从1978年到1985年参加工会的作用起了什么变化？
(vi)从教材方程(13.2)开始，检验会员工资差别是否随时间而变。(应使用简单的t检验。)
(vii)你在第(v)和(vi)两部分中的结论是否相互矛盾？试解释。
本题使用MINWAGE.RAW中的数据。使用232部门(男性用品部门) 中的时间序列。
(i)估计模型
并检验误差中的AR(1)序列相关。假定回归元是严格外生的。误差中有正或负的序列相关吗？
(ii)利用12阶滞后， 求第(i) 部分中OLS估计值的尼威-韦斯特标准误。这个尼威-韦斯特标准误与通常的OLS标准误相比如何？
(iii)现在求出OLS的异方差-稳健标准误， 并与通常的标准误和尼威-韦斯特标准误进行比较。在这个应用研究中，序列相关和异方差哪个更成问题？
(iv)在原方程中用布罗施-帕甘检验验证误差表现出很强的异方差性。
(v)在第(i) 部分的方程中增加gm wage的1~12阶滞后。求出1~12阶滞后联合下检验的p值， 并与异方差-稳健检验的p值进行比较。对异方差的调整对这些滞后变量的显著性有何影响？
(vi)利用尼威-韦斯特方法，求第(v)部分中联合显著性检验的p值。你现在得到什么结论？
(vii)如果你不用g wage的这些滞后项， 长期倾向的估计值有很大的不同吗？
利用MRO2.RAW中的数据。
(i)利用在工作的428个妇女的数据，通过以exper、exper2、nwifeinc、age、kidsir6和kidsge6为解释变量的OLS来估计受教育的回报。报告educ的估计值及其标准误。
(ii)现在用赫克曼估计受教育的回报，其中所有外生变量都在第二阶段的回归中出现。换句话说，就是做log(wage)对educ、exper、ecper2、nwifeinc、age、kidslt6、kidsge6和入的回归。将估计的教育回报及其标准误与第(i)部分的结果相比较。
(iii)只用428个工作妇女的观测，将1对educ、exper、ecper2、nwifeinc、age、kidslt6、kidsge6回归。R2为多大？这如何有助于解释你在第(ii)部分得到的结果？(提示：考虑多重共线性。)
本题要用到WAGE2.RAW中的数据。
(i)考虑一个标准的工资方程
表述虚拟假设：多一年工作经历与在现在的岗位上多工作一年对log(wage) 具有相同影响。
(ii)在5%的显著性水平上，相对于双侧对立假设，通过构造一个95%的置信区间来检验第(i)部分中的虚拟假设。你得到的结论是什么？
(i)利用表13-1中同样的变量估计kids的一个泊松回归模型。解释y82的系数。
(ii)保持其他因素不变，黑人妇女和非黑人妇女在生育上的估计百分数差异是多少？
(iii)求σ。有过度散布和散布不足的证据吗？
(iv)计算泊松回归中的拟合值和作为kidsi和kidsi之相关系数平方的R2。并与线性回归模型中的R2相比较。
In this crisis(危机) I think I may be pardoned if I do not address the House at any length today, and I hope that any of my friends and colleagues or former colleagues who are affected by the political reconstruction will make all allowances for any lack of ceremony (礼仪)with which it has been necessary to act.
I say to the House as I said to Ministers who have joined this government, I have nothing to offer but blood, toil(辛苦), sweat and tears. We have before us an ordeal(考验) of the most grievous (极大的)kind. We have before us many, many months of struggle and suffering.
You ask, what is our policy？ I say is to wage (开展)war by land, sea and air. War with all our might and with all the strength God has given us, and to wage war against a monstrous tyranny(残暴) never surpassed (超越)in the dark and lamentable (可恶的)catalogue of human crime. That is our policy.
You ask, what is our aim？ I can answer in one word. It is victory. Victory at all costs--victory in spite of all terrors--victory, however long and hard the road may be, for without victory there is no survival.
Let that be realized. No survival for the British Empire, no survival for all that the British Empire has stood for, no survival for the urge, the impulse (动力)of the ages, that mankind shall move forward toward his goal.
I take up my task in buoyancy(快乐) and hope. I feel sure that our cause will not be suffered to fail among men.
I feel entitled(有权利的)at this juncture, at this time, to claim the aid of all and to say, "come then, let us go forward together with our united strength".
The first paragraph tells mainly about ______.
A．the crisis
B．the political reconstruction
C．lack of ceremony
D．all allowances
Mrs. Baker
A.A 10% increase is already too much, and I' m here to persuade the Union to see reason.
B.I hope that strikes should be banned in all sectors relating to the nation's security and stability.
C.We will never go back to work until our goals are achieved.
D.I think that the government should give in to the electricity workers' demands.
E.I strongly suggest that all the power stations should be run by the army and that the strikers should be put into prison.
F.I must make you clear that strikes will destroy the economy and that many people will lose their jobs.
G.We are forced to call a strike because the government rejected our wage claim.
Mr. Tom Brown
A.A 10% increase is already too much, and I m here to persuade the Union to see reason.
B.I hope that strikes should be banned in all sectors relating to the nations security and stability.
C.We will never go back to work until our goals are achieved.
D.I think that the government should give in to the electricity workers demands.
E.I strongly suggest that all the power stations should be run by the army and that the strikers should be put into prison.
F.I must make you clear that strikes will destroy the economy and that many people will lose their jobs.
G.We are forced to call a strike because the government rejected our wage claim.
Mr. Tom Brown
A.A 10% increase is already too much, and I' m here to persuade the Union to see reason.
B.I hope that strikes should be banned in all sectors relating to the nation's security and stability.
C.We will never go back to work until our goals are achieved.
D.I think that the government should give in to the electricity workers' demands.
E.I strongly suggest that all the power stations should be run by the army and that the strikers should be put into prison.
F.I must make you clear that strikes will destroy the economy and that many people will lose their jobs.
G.We are forced to call a strike because the government rejected our wage claim.
