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1、第7章練習(xí)5在申請出國讀學(xué)位的16名學(xué)生中有如下GRE數(shù)量與詞匯分?jǐn)?shù)。學(xué)生編號數(shù)量成績Q詞匯成績V是否準(zhǔn)入Y(1=準(zhǔn),0=不準(zhǔn))學(xué)生編號數(shù)量成績Q詞匯成績V是否準(zhǔn)入Y(1=準(zhǔn),0=不準(zhǔn))176055019520660126003500108002500372032001167048004710630112670520155304301137807101665057001452045007800500115680590186506801165003800解:根據(jù)Eview軟件得如下表:Dependent Variable: YMethod: ML - Binary Logit (Quadrati
2、c hill climbing)Date: 05/22/11 Time: 22:19Sample: 1 16Included observations: 16Convergence achieved after 5 iterationsCovariance matrix computed using second derivativesVariableCoefficientStd. Errorz-StatisticProb. C-11.107416.124290-1.8136650.0697Q0.0039680.0080080.4955150.6202V0.0176960
3、.0087522.0219140.0432McFadden R-squared0.468521 Mean dependent var0.562500S.D. dependent var0.512348 S.E. of regression0.382391Akaike info criterion1.103460 Sum squared resid1.900896Schwarz criterion1.248321
4、Log likelihood-5.827681Hannan-Quinn criter.1.110878 Restr. log likelihood-10.96503LR statistic10.27469 Avg. log likelihood-0.364230Prob(LR statistic)0.005873Obs with Dep=07 Total obs16Obs with Dep=19于是,我們可得到Logit模型為: (-1.81)
5、(0.49) (2.02) , LR(2)=10.27如果在Binary estination這一欄中選擇Probit估計方法,可得到如下表:Dependent Variable: YMethod: ML - Binary Probit (Quadratic hill climbing)Date: 05/22/11 Time: 22:25Sample: 1 16Included observations: 16Convergence achieved after 5 iterationsCovariance matrix computed using second derivativesVar
6、iableCoefficientStd. Errorz-StatisticProb. C-6.6345423.396882-1.9531270.0508Q0.0024030.0045850.5241210.6002V0.0105320.0046932.2442990.0248McFadden R-squared0.476272 Mean dependent var0.562500S.D. dependent var0.512348 S.E. of regression0.38165
7、5Akaike info criterion1.092836 Sum squared resid1.893588Schwarz criterion1.237696 Log likelihood-5.742687Hannan-Quinn criter.1.100254 Restr. log likelihood-10.96503LR statistic10.44468 Avg. log likelihood-0.3
8、58918Prob(LR statistic)0.005395Obs with Dep=07 Total obs16Obs with Dep=19于是,我們可得到Probit模型為: (-1.95) (0.52) (2.24) , LR(2)=10.44第7章練習(xí)6下表列出了美國、加拿大、英國在19801999年的失業(yè)率Y以及對制造業(yè)的補(bǔ)償X的相關(guān)數(shù)據(jù)資料。美 國加拿大英 國年份補(bǔ)助失業(yè)率補(bǔ)助失業(yè)率補(bǔ)助失業(yè)率(美元/小時)(%)(美元/小時)(%)(美元/小時)(%)198055.67.1497.243.77.0198161.17.65
9、4.17.344.110.5198267.09.759.610.642.211.3198368.89.663.911.539.011.8198471.27.564.310.937.211.7198575.17.263.510.239.011.2198678.57.063.39.247.811.2198780.76.268.08.460.210.3198864.05.576.07.368.38.6198986.65.384.17.067.77.2199090.85.691.57.781.76.9199195.66.8100.19.890.58.81992100.07.5100.010.6100.
10、010.11993102.76.995.510.788.710.51994105.66.191.79.492.39.71995107.95.693.38.595.98.71996109.35.493.18.795.68.21997111.44.994.48.2103.37.01998117.34.590.67.5109.86.31999123.24.991.95.7112.26.1解:(1)根據(jù)Eview 軟件操作得如下表:美國(US):Dependent Variable: YMethod: Least SquaresDate: 05/22/11 Time: 22:38Sample: 198
11、0 1999Included observations: 20VariableCoefficientStd. Errort-StatisticProb. C10.568581.1389829.2789720.0000X-0.0454030.012538-3.6211890.0020R-squared0.421464 Mean dependent var6.545000Adjusted R-squared0.389323 S.D. dependent var1.432875S.E.
12、of regression1.119732 Akaike info criterion3.158696Sum squared resid22.56840 Schwarz criterion3.258269Log likelihood-29.58696 Hannan-Quinn criter.3.178133F-statistic13.11301 Durbin-Watson stat0.797022Prob(F-s
13、tatistic)0.001953根據(jù)上表可得對美國的OLS估計結(jié)果為: (9.28) (-3.62) , , D.W.=0.797, RSS=22.57加拿大(CA):Dependent Variable: YMethod: Least SquaresDate: 05/22/11 Time: 22:43Sample: 1980 1999Included observations: 20VariableCoefficientStd. Errort-StatisticProb. C9.3424521.8107015.1595790.0001X-0.0065800.02233
14、3-0.2946480.7716R-squared0.004800 Mean dependent var8.820000Adjusted R-squared-0.050489 S.D. dependent var1.600855S.E. of regression1.640770 Akaike info criterion3.922848Sum squared resid48.45828 Schwarz crit
15、erion4.022421Log likelihood-37.22848 Hannan-Quinn criter.3.942286F-statistic0.086817 Durbin-Watson stat0.578517Prob(F-statistic)0.771634同樣,根據(jù)上表可得對加拿大(CA)的OLS估計結(jié)果為: (5.16) (-0.29) , , D.W.=0.579, RSS=48.46英國(UK):Dependent Variable: YMethod: Least SquaresD
16、ate: 05/22/11 Time: 22:48Sample: 1980 1999Included observations: 20VariableCoefficientStd. Errort-StatisticProb. C12.554260.99023412.678080.0000X-0.0465910.012777-3.6463530.0018R-squared0.424845 Mean dependent var9.155000Adjusted R-squared0.392891 &
17、#160;S.D. dependent var1.916542S.E. of regression1.493315 Akaike info criterion3.734513Sum squared resid40.13981 Schwarz criterion3.834087Log likelihood-35.34513 Hannan-Quinn criter.3.753951F-statistic13.29589
18、0;Durbin-Watson stat0.698064Prob(F-statistic)0.001847同樣,根據(jù)上表可得對英國(UK)的OLS估計結(jié)果為: (12.68) (-3.65) , , D.W.=0.6981, RSS=40.14(2)將三個國家的數(shù)據(jù)合并成一個樣本(共60個樣本點(diǎn)),根據(jù)Eview軟件得:OLS估計結(jié)果如下:Dependent Variable: YMethod: Least SquaresDate: 05/22/11 Time: 22:58Sample: 1980 2039Included observations: 60VariableCoefficient
19、Std. Errort-StatisticProb. C12.149460.82026614.811610.0000X-0.0495000.009844-5.0287290.0000R-squared0.303622 Mean dependent var8.173333Adjusted R-squared0.291616 S.D. dependent var2.009120S.E. of regression1.690988 Akaik
20、e info criterion3.921268Sum squared resid165.8475 Schwarz criterion3.991079Log likelihood-115.6380 Hannan-Quinn criter.3.948575F-statistic25.28811 Durbin-Watson stat0.492398Prob(F-statistic)0.000005根據(jù)上表得估計方程為: (14.81) (-5.03) , , D.W.=0.49, RSS=165.85(3)在Eviews軟件下,估計變截距固定影響模型得到如下結(jié)果:固定影響模型可按最小二乘虛擬變量(LSDV)模型估計,記D2為加拿大(CA)的虛擬變量;即觀測值屬于CA時取值為1,其他取值為0;記D3為英國的虛擬變量,取值規(guī)律同D2,所以,LSDV模型的OLS估計結(jié)果如下: (11.73) (4.12) (4.20) (-4.33), , D.W.=0.664, RSS=117.94美國(US)沒有設(shè)定虛擬變量,成為比較的基準(zhǔn)。
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