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上证综指对数收益率月度数据的特征分析(1991.1-2014.9)目录1. 数据处理:收益率对数化2. 数据导入:3. 对数收益率特征分析(1) 简单描述性统计(2) 平稳性检验(3) 自相关性分析(4) 损益的不对称性(5) 分布的尖峰厚尾分析(6) 波动聚集效应检验4. 对数收益率可预测性分析(1) 短期(2) 中期(3) 长期一、 数据处理Lnrt=ln(1+rt*)其中rt*为普通收益率二、 数据导入FilenewworkfileDated-regular frequency; monthlyObjectnew objectgroupg1三、 对数收益率特征分析(1)简单描述性统计lnrt窗口-viewdescriptive statistics & testshistogram & stats or stats tableMean0.010218Median0.006760Maximum1.019664Minimum-0.373282Std. Dev.0.130937Skewness2.438914Kurtosis21.00333Jarque-Bera4131.466Probability0.000000Sum2.912210Sum Sq. Dev.4.869011Observations285作图:viewgragh-line(2)平稳性检验ADF-testViewunit root testlevelnone Null Hypothesis: LNRT has a unit rootExogenous: NoneLag Length: 0 (Automatic - based on SIC, maxlag=15)t-StatisticProb.*Augmented Dickey-Fuller test statistic-17.523360.0000Test critical values:1% level-2.5731305% level-1.94194510% level-1.615953*MacKinnon (1996) one-sided p-values.Augmented Dickey-Fuller Test EquationDependent Variable: D(LNRT)Method: Least SquaresDate: 09/29/14 Time: 01:34Sample (adjusted): 1991M02 2014M09Included observations: 284 after adjustmentsVariableCoefficientStd. Errort-StatisticProb.LNRT(-1)-1.0410890.059411-17.523360.0000R-squared0.520394Mean dependent var0.000137Adjusted R-squared0.520394S.D. dependent var0.189813S.E. of regression0.131452Akaike info criterion-1.216828Sum squared resid4.890168Schwarz criterion-1.203980Log likelihood173.7896Hannan-Quinn criter.-1.211677Durbin-Watson stat1.992620(3)自相关性分析:ACF&PACFViewcorrelogramlevel36(4)损益不对称作出分布图:viewgraghdistribution偏度:见(1)(5)尖峰厚尾见分布特征、偏度、峰度、及J-B检验结果(6)波动率聚集Genr vt=lnrt2检验vt序列的自相关:ACF相关系数检验相关系数VTVT1VT2VT3VT1.0000000.0647410.0498720.054298VT10.0647411.0000000.0646720.049843VT20.0498720.0646721.0000000.064714VT30.0542980.0498430.0647141.000000收益率可预测性分析短期:1、2、3、4ls lnrt c ar(1) ar(2) ar(3) ar(4)与ls lnrt c lnrt(-1) lnrt(-2) lnrt(-3) lnrt(-4) 是一样的Dependent Variable: LNRTMethod: Least SquaresDate: 09/29/14 Time: 01:55Sample (adjusted): 1991M02 2014M09Included observations: 284 after adjustmentsConvergence achieved after 3 iterationsVariableCoefficientStd. Errort-StatisticProb.C0.0101840.0074371.3693870.1720AR(1)-0.0473080.059496-0.7951590.4272R-squared0.002237Mean dependent var0.010190Adjusted R-squared-0.001301S.D. dependent var0.131167S.E. of regression0.131252Akaike info criterion-1.216375Sum squared resid4.858053Schwarz criterion-1.190678Log likelihood174.7252Hannan-Quinn criter.-1.206072F-statistic0.632278Durbin-Watson stat1.992328Prob(F-statistic)0.427190Inverted AR Roots-.05中期:6、9、12ls lnrt c ar(6) ar(9) ar(12)Dependent Variable: LNRTMethod: Least SquaresDate: 09/29/14 Time: 01:57Sample (adjusted): 1992M01 2014M09Included observations: 273 after adjustmentsConvergence achieved after 3 iterationsVariableCoefficientStd. Errort-StatisticProb.C0.0071490.0090960.7860240.4325AR(6)0.0071370.0587900.1214010.9035AR(9)0.2053360.0586043.5037720.0005AR(12)-0.0716970.058559-1.2243580.2219R-squared0.048799Mean dependent var0.007626Adjusted R-squared0.038191S.D. dependent var0.131559S.E. of regression0.129022Akaike info criterion-1.243117Sum squared resid4.477986Schwarz criterion-1.190231Log likelihood173.6855Hannan-Quinn criter.-1.221888F-statistic4.600115Durbin-Watson stat2.082147Prob(F-statistic)0.003701Inverted AR Roots.74+.08i.74-.08i.64-.58i.64+.58i.18-.85i.18+.85i-.30-.68i-.30+.68i-.43+.60i-.43-.60i-.83+.27i-.83-.27iDependent Variable: LNRTMethod: Least SquaresDate: 09/29/14 Time: 02:00Sample (adjusted): 1991M10 2014M09Included observations: 276 after adjustmentsConvergence achieved after 3 iterationsVariableCoefficientStd. Errort-StatisticProb.C0.0090600.0097650.9278770.3543AR(9)0.2030650.0586423.4627680.0006R-squared0.041927Mean dependent var0.009287Adjusted R-squared0.038430S.D. dependent var0.131834S.E. of regression0.129276Akaike info criterion-1.246511Sum squared resid4.579180Schwarz criterion-1.220276Log likelihood174.0185Hannan-Quinn criter.-1.235983F-statistic11.99076Durbin-Watson stat2.055078Prob(F-statistic)0.000620Inverted AR Roots.84.64+.54i.64-.54i.15+.82i.15-.82i-.42-.73i-.42+.73i-.79+.29i-.79-.29iDependent Variable: LNRTMethod: Least SquaresDate: 09/29/14 Time: 02:02Sample (adjusted): 1992M01 2014M09Included observations: 273 after adjustmentsConvergence achieved after 3 iterationsVariableCoefficientStd. Errort-StatisticProb.C0.0065840.0098720.6669270.5054AR(1)-0.0317760.061806-0.5141170.6076AR(2)0.0180190.0610520.2951320.7681AR(3)0.0321530.0606200.5304010.5963AR(4)-0.1039040.059784-1.7379830.0834AR(5)-0.0538730.059923-0.8990220.3695AR(6)0.0198530.0591600.3355750.7375AR(7)0.1655010.0589432.8078070.0054AR(8)-0.0002600.059754-0.0043470.9965AR(9)0.1666450.0594192.8045600.0054AR(10)-0.0778650.060156-1.2943860.1967AR(11)0.1296240.0603152.1491080.0325AR(12)-0.0470200.060841-0.7728240.4403R-squared0.105523Mean dependent var0.007626Adjusted R-squared0.064240S.D. dependent var0.131559S.E. of regression0.127263Akaike info criterion-1.238670Sum squared resid4.210943Schwarz criterion-1.066790Log likelihood182.0785Hannan-Quinn criter.-1.169674F-statistic2.556064Durbin-Watson stat2.007225Prob(F-statistic)0.003269Inverted AR Roots.85.63+.57i.63-.57i.37.27-.66i.27+.66i-.14-.79i-.14+.79i-.51-.68i-.51+.68i-.87-.30i-.87+.30i长期:24、36、48、64ls lnrt c ar(24) ar(36) ar(48) ar(64)Dependent Variable: LNRTMethod: Least SquaresDate: 09/29/14 Time: 01:59Sample (adjusted): 1996M05 2014M09Included observations: 221 after adjustmentsConvergence achieved after 3 iterationsVariableCoefficientStd. Errort-StatisticProb.C0.0062730.0048511.2930490.1974AR(24)-0.0889090.051185-1.7370340.0838AR(36)0.0949040.0483061.9646430.0507AR(48)-0.0675560.037906-1.7821720.0761AR(64)-0.0329190.036954-0.8908070.3740R-squared0.048835Mean dependent var0.005599Adjusted R-squared0.031221S.D. dependent var0.080044S.E. of regression0.078784Akaike info criterion-2.221842Sum squared resid1.340704Schwarz criterion-2.144961Log likelihood250.5136Hanna
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