计量作业-计量经济学-第三版-李子奈

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计量经济学第三版李子柰12下表是中国内地2007年各地区税收Y和国内生产总值GDP的统计资料。单位:(亿元)YGDP1435.79353.3438.45050.4618.313709.5430.55733.4347.96091.1815.711023.5237.45284.733570651975.512188.91894.825741.21535.418780.4401.97364.25949249.1281.95500.31308.425965.962515012.54349230.7410.792002415.531084.4282.75955.7881223.3294.54122.562910505.3211.92741.9378.64741.311.7342.2355.55465.8142.12702.443.3783.658.8889.2220.63523.2要求,以手工和运用Eviews软件(或其它软件):(1)做出散点图,建立税收随国内生产总值GDP变化的一元线性回归方程,并解释斜率的经济意义;(2)对所建立的回归方程进行检验;(3)若2008年某地区国内生产总值为8500亿元,求该地区税收入的预测值机预测区间。解:下图是运用Eviews软件分析出的结果。DependentVariable:YMethod:LeastSquaresDate:09/17/11Time:15:13Sample:232Includedobservations:31VariableCoefficientStd.Errort-StatisticProb.C-10.6296386.06992-0.1235000.9026GDP0.0710470.0074079.5912450.0000R-squared0.760315Meandependentvar621.0548AdjustedR-squared0.752050S.D.dependentvar619.5803S.E.ofregression308.5176Akaikeinfocriterion14.36378Sumsquaredresid2760310.Schwarzcriterion14.45629Loglikelihood-220.6385F-statistic91.99198Durbin-Watsonstat1.570523Prob(F-statistic)0.000000元增加,税收收入每增加一元的斜率的经济学意义就是程:变化的一元线性回归方税收随国内生产总值建立模型071047.0071047.062963.10GDPGDPYGDP3214647.11326987.59341391915.55045.226987.593702435.3070045.226987.593032261003.010345.95183045.226987.5930000029396.031110345.95183045.226987.593052040820633914.15297931110345.95183045.226987.5931734694021*1311258.889185003112312760310045.226987.593%9517346940219.2756241258.8891-4185309681n-1258.889126987.5938500071047.062963.1020080.0710472007,10.071047005.229t292-n%5t%1047.7760315.02022i025.02)()()()的预测区间为(的置信度下,于是,在)()(的样本均值与样本方差由于(亿元)测值:该地区的税收收入的预可得,由上述回归方程年某地区国内生产总值假设我们需要关注预测元。一元,税收增加每增加年表明,,且该斜率值满足)(的临界值显著性水平下自由度为检验看,大于项变化来解释。从斜率的可由,表明税收变化的数模型拟合较好:可绝系从回归估计的结果看,模型检验YEXXXDXEGDPYGDPGDPR

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