Research Article

Chinese Gini Coefficient from 2005 to 2012, Based on 20 Grouped Income Data Sets of Urban and Rural Residents

Table 1

Fitting results of the eight distribution functions.
(a)

Year muSigma chi2Theoretical
Pr
()
Actual
Pr
()
ErrorTheoretical
Pr
( > 100000)
Actual
Pr
( > 100000)
Error

Log-
normal
(urban)
20050.78030.564438930.00000.00910.00910.07090.00430.0666
20090.40230.60544060.00040.00180.00140.02310.02450.0014
20100.51130.59426580.00020.00120.00100.03230.00430.0280
20110.64600.586119890.00010.00130.00120.05010.05110.0010
20120.78030.564438930.00000.00080.00080.07090.07020.0007

(rural)2005−1.25720.67032980.29960.29430.00530.00180.00370.0019
2009−0.81270.69941240.12730.13290.00560.01570.01570.0000
2010−0.66970.69351980.08770.09520.00750.02470.02350.0012
2011−0.50660.71576000.06170.0740.01230.04680.04080.0060
2012−0.38120.72406140.04490.05630.01140.06890.06040.0085

(b)

YearAlphaBetachi2Theoretical
Pr
()
Actual
Pr
()
ErrorTheoretical
Pr
( > 100000)
Actual
Pr
( > 100000)
Error

Weibull (urban)20051.615912252215560.05200.00910.04290.00010.00430.0042
20091.74622001580040.01780.00180.01600.00710.02450.0174
20101.81012211970530.01280.00120.01160.01260.00430.0083
20111.87542507763740.00870.00130.00740.02600.05110.0251
20121.99632823253610.00510.00080.00430.04370.07020.0265

(rural)20051.33023803124610.34640.29430.05210.00010.00370.0036
20091.4329614152880.18160.13290.04870.00440.01570.0113
20101.4913707548110.14100.09520.04580.00900.02350.0145
20111.5123836634710.10850.0740.03450.02380.04080.0170
20121.5399946929910.08720.05630.03090.04230.06040.0181

(c)

YearAlphaBetachi2Theoretical
Pr
()
Actual
Pr
()
ErrorTheoretical
Pr
( > 100000)
Actual
Pr
( > 100000)
Error

Gamma (urban)20051.93640.181773780.32010.00910.31100.00020.00430.0041
20092.08070.268124710.15450.00180.15270.00560.02450.0189
20102.20050.290520100.11440.00120.11320.01110.00430.0068
20112.17620.347312200.08640.00130.08510.02750.05110.0236
20122.20200.38839600.06750.00080.06670.04680.07020.0234

(rural)20052.77280.393471350.02330.29430.27100.00020.00370.0035
20092.98750.594829720.00510.13290.12780.00980.01570.0059
20103.13970.625224200.00310.09520.09210.01650.02350.0070
20113.27770.679421550.00170.0740.07230.03120.04080.0096
20123.57780.701315810.00070.05630.05560.05060.06040.0098

(d)

YearAlphaBetachi2Theoretical
Pr
()
Actual
Pr
()
ErrorTheoretical
Pr
( > 100000)
Actual
Pr
( > 100000)
Error

Log-
logistic
(urban)
20050.90402.88062040.01280.00910.00370.00720.00430.0029
20091.49962.89392940.00290.00180.00110.02970.02450.0052
20101.67512.95331790.00190.00120.00070.03810.00430.0338
20111.91432.99141220.00120.00130.00010.05360.05110.0025
20122.19133.09541650.00060.00080.00020.07220.07020.0020

(rural)20050.28332.58231790.28920.29430.00510.00640.00370.0027
20090.44502.44154440.12430.13290.00860.02490.01570.0092
20100.51492.46864350.08830.09520.00690.03390.02350.0104
20110.60972.39306340.06490.0740.00910.05510.04080.0143
20120.69192.36645370.05040.05630.00590.07500.06040.0146

(e)

Yearchi2Theoretical
Pr
()
Actual
Pr
()
ErrorTheoretical
Pr
( > 100000)
Actual
Pr
( > 100000)
Error

SM
(urban)
20052.84490.92101.03582010.01330.00910.00420.00680.00430.0025
20092.83011.55371.06962760.00320.00180.00140.02800.02450.0035
20102.87911.74421.08151540.00210.00120.00090.03580.00430.0315
20112.99011.91561.00131220.00120.00130.00010.05350.05110.0024
20123.10322.18290.99211660.00060.00080.00020.07250.07020.0023

(rural)20052.33250.32811.2774690.29530.29430.00100.00450.00370.0008
20092.14830.57391.4771680.13580.13290.00290.01730.01570.0016
20102.19510.65401.4516710.09870.09520.00350.02520.02350.0017
20112.09000.83251.5984550.07610.0740.00210.04220.04080.0014
20122.09760.92121.5373780.05940.05630.00310.06230.06040.0019

(f)

Yearchi2Theoretical
Pr
()
Actual
Pr
()
ErrorTheoretical
Pr
( > 100000)
Actual
Pr
( > 100000)
Error

Dagum
(urban)
20052.82280.87511.06331920.01170.00910.00260.00770.00430.0034
20092.86151.47421.03302910.00270.00180.00090.03040.02450.0059
20102.96021.68060.99351790.00190.00120.00070.03790.00430.0336
20112.94361.87071.04651170.00100.00130.00030.05480.05110.0037
20123.03012.12841.06111580.00050.00080.00030.07400.07020.0038

(rural)20052.77440.33110.7543990.29480.29430.00050.00510.00370.0014
20092.72530.53870.72251860.13560.13290.00270.01980.01570.0041
20102.73620.61020.74761940.09860.09520.00340.02810.02350.0046
20112.73630.75160.70271870.07700.0740.00300.04560.04080.0048
20122.65560.82860.74192150.05980.05630.00350.06600.06040.0056

(g)

Yearchi2Theoretical
Pr
()
Actual
Pr
()
ErrorTheoretical
Pr
( > 100000)
Actual
Pr
( > 100000)
Error

B2
(urban)
20056.07800.82345.5730840.00740.00910.00170.00370.00430.0006
20095.47521.78446.44011040.00100.00180.00080.02270.02450.0018
20105.40252.25097.12511720.00060.00120.00060.03040.03340.0030
20115.53322.59817.36184290.00030.00130.00100.04720.05110.0039
20125.74853.25628.34424990.00010.00080.00070.06650.07020.0037

(rural)20056.39290.18244.2436550.29370.29430.00060.00340.00370.0003
20093.67440.69205.4969290.13170.13290.00120.01500.01570.0007
20103.62850.88125.9331290.09390.09520.00130.02250.02350.0010
20113.08431.51427.0842660.07200.07400.00200.03950.04080.0013
20123.03381.77317.1678280.05510.05630.00120.05970.06040.0007

(h)

Yearchi2Theoretical
Pr
()
Actual
Pr
()
ErrorTheoretical
Pr
( > 100000)
Actual
Pr
( > 100000)
Error

GB2
(urban)
20051.65732.430087792.3331200.00900.00910.00010.00480.00430.0005
20091.61672.4306157632.6036310.00150.00180.00030.02460.02450.0001
20101.93211.8440177862.0260290.00120.00120.00000.03330.03340.0001
20112.26151.5181193181.5423610.00070.00130.00060.05150.05110.0004
20122.23351.6316222261.6731990.00030.00080.00050.07030.07020.0001

(rural)20051.55532.261428052.2292460.29420.29430.00010.00390.00370.0002
20091.43651.945260882.8369120.13280.13290.00010.01580.01570.0001
20101.47201.892071362.826970.09530.09520.00010.02350.02350.0000
20111.61151.473792802.5437240.07390.07400.00010.04100.04080.0002
20121.38551.8458115863.3780140.05620.05630.00010.06060.06040.0002