资产定价理论作业(模板) .doc
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1、资产定价理论作业(一)协整分析20106545 邱云华内容:对两组数据做协整分析数据:1.1986年-2011年中国国家外汇储备; 2.1986年-2011年中国国家进口总额。年份外汇储备(Y)进口总额(X)198620.72429.1198729.23432.1198833.72552.7198955.5591.4199011.93533.51991217.12637.91992194.43805.91993211.991030.61994516.2115.611995735.971320.819961050.291388.319971398.91423.719981449.591402.4
2、19991546.75165720001655.742250.920012121.652435.520022864.072951.720034032.514127.620046099.325612.2920058188.726599.53200610663.47914.61200715282.499561.16200819460.311330.920092399210056.03201028473.3813948.320113181117435 数据来源:中国统计年鉴第一步:数据平稳性检验首先对外汇储备做平稳性检验,通过Eviews软件,采用ADF检验法对外汇储备(WHCB)进行检验,结果如下
3、:对原数据做检验,得如下结果:Null Hypothesis: WHCB has a unit rootExogenous: ConstantLag Length: 1 (Automatic - based on SIC, maxlag=5)t-StatisticProb.*Augmented Dickey-Fuller test statistic-1.3687990.5801Test critical values:1% level-3.7378535% level-2.99187810% level-2.635542*MacKinnon (1996) one-sided p-values
4、.由上图Prob.值为0.58010.01,知原数据组非平稳。继续对数据的一阶差分做检验,得一下结果:Null Hypothesis: D(WHCB) has a unit rootExogenous: ConstantLag Length: 0 (Automatic - based on SIC, maxlag=5)t-StatisticProb.*Augmented Dickey-Fuller test statistic-0.5056740.8737Test critical values:1% level-3.7378535% level-2.99187810% level-2.635
5、542*MacKinnon (1996) one-sided p-values.由上图Prob.值为0.87370.01,知原数据一阶非平稳。继续对数据的二阶差分做检验,得如下加过:Null Hypothesis: D(WHCB,2) has a unit rootExogenous: ConstantLag Length: 0 (Automatic - based on SIC, maxlag=5)t-StatisticProb.*Augmented Dickey-Fuller test statistic-4.2963570.0029Test critical values:1% leve
6、l-3.7529465% level-2.99806410% level-2.638752*MacKinnon (1996) one-sided p-values.由Prob.值为0.00290.01,知原数据组非平稳。Null Hypothesis: D(JKZE) has a unit rootExogenous: ConstantLag Length: 3 (Automatic - based on SIC, maxlag=5)t-StatisticProb.*Augmented Dickey-Fuller test statistic0.4014030.9780Test critica
7、l values:1% level-3.7880305% level-3.01236310% level-2.646119*MacKinnon (1996) one-sided p-values.由上图Prob.值为0.97800.01,知原数据一阶非平稳。Null Hypothesis: D(JKZE,2) has a unit rootExogenous: ConstantLag Length: 2 (Automatic - based on SIC, maxlag=5)t-StatisticProb.*Augmented Dickey-Fuller test statistic-5.59
8、35910.0002Test critical values:1% level-3.7880305% level-3.01236310% level-2.646119*MacKinnon (1996) one-sided p-values.由Prob.值为0.00020.01,知原数据具有二阶整性,即JKZEI(2).第二步:协整分析通过上述分析,知两组数据均具有二阶整性,故继续进行协整检验。对两组数据的二阶差分进行协整检验,点击QUICKEstimate-Equation,并输入d(whcb,2) c d(jkze,2),点击OK,得如下结果:Dependent Variable: D(WH
9、CB,2)Method: Least SquaresDate: 06/27/13 Time: 15:30Sample (adjusted): 1988 2011Included observations: 24 after adjustmentsVariableCoefficientStd. Errort-StatisticProb.C140.7767119.14271.1815810.5406D(JKZE,2)-0.0142180.087234-0.162985NAS.E. of regression580.3717Akaike info criterion15.64487Sum squar
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