斯托克计量经济学课后习题实证答案.pdf

斯托克计量经济学课后习题实证答案

PARTTWOSolutionstoEmpirical

Exercises

Chapter3

ReviewofStatistics

SolutionstoEmpiricalExercises

1.(a)

AverageHourlyEarnings,Nominal$’s

MeanSE(Mean)95%ConfidenceIntervalAHE199211.63

0.06411.5011.75

AHE200416.770.09816.5816.96

DifferenceSE(Difference)95%ConfidenceIntervalAHE2004

AHE19925.140.1174.915.37

(b)

AverageHourlyEarnings,Real$2004

MeanSE(Mean)95%ConfidenceIntervalAHE199215.66

0.08615.4915.82

AHE200416.770.09816.5816.96

DifferenceSE(Difference)95%ConfidenceIntervalAHE2004

AHE19921.110.1300.851.37

(c)Theresultsfrompart(b)adjustforchangesinpurchasing

power.Theseresultsshouldbeused.

(d)

AverageHourlyEarningsin2004

MeanSE(Mean)95%ConfidenceIntervalHighSchool13.81

0.10213.6114.01

College20.310.15820.0020.62

DifferenceSE(Difference)95%ConfidenceIntervalCollege

HighSchool6.500.1886.136.87

SolutionstoEmpiricalExercisesinChapter3109

(e)

AverageHourlyEarningsin1992(in$2004)

MeanSE(Mean)95%ConfidenceIntervalHighSchool

13.480.09113.3013.65College

19.070.14818.7819.36

DifferenceSE(Difference)95%ConfidenceIntervalCollege

HighSchool

5.590.1735.255.93

(f)AverageHourlyEarningsin2004

MeanSE(Mean)95%ConfidenceIntervalAHEHS,2004

AHEHS,1992

0.330.1370.060.60AHECol,2004

AHECol,1992

1.240.2170.821.66

Col–HSGap(1992)

5.590.1735.255.93Col–HSGap(2004)

6.500.1886.136.87

DifferenceSE(Difference)95%ConfidenceIntervalGap2004

Gap19920.910.2560.411.41

Wagesofhighschoolgraduatesincreasedbyanestimated

0.33dollarsperhour(witha95%