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Using retroactive adjustment approach of history data published by the National Bureau of Statistics(NBS),this study has adjusted micro-level survey data of China Household Income Project Survey(CHIPS,2007) and conducted point estimation on household income Gini coefficient using the NBS method.On this basis,the standard error of the point estimation of China’s Gini coefficient is estimated using bootstrap method,creating a confidence interval of Gini coefficient.Results indicate that among five continuous declines of Gini coefficient between 2008 and 2013,only three declines are statistically significant.It is thus too early to jump at the conclusion that the Gini coefficient of China s household income distribution has already entered into a downward channel and at least the argument that China’s Gini coefficient has been on the decline for five consecutive years is questionable.
Using a retroactive adjustment approach of history data published by the National Bureau of Statistics (NBS), this study has adjusted micro-level survey data of China Household Income Project Survey (CHIPS, 2007) and conducted point estimation on household income Gini coefficient using the NBS method.On this basis, the standard error of the point estimation of China’s Gini coefficient is estimated using bootstrap method, creating a confidence interval of Gini coefficient. Results condition that among five continuous declines of Gini coefficient between 2008 and 2013, only three declines are statistics significant. It is thus early early jump to the conclusion that the Gini coefficient of China s household income distribution has already entered into a downward channel and at least the argument that China’s Gini coefficient has been on the decline for five consecutive years is questionable .