Income inequalitiesIncome inequalities (Income Inequality) is regarded as a relative-poverty or relative poverty (Relative Poverty) Means that the total revenue of the country was allocated to the prachatnoklum. In some countries, that is unfair to the public revenue is concentrated just some or only one of the prachatnoklum, most often a group of people with high incomes (Thai Development Research Institute, 2546 (2003)) Therefore, the country is economic growth, which can cause gross domestic product and gross national income, the higher the public as well as to people with an average income per person, higher and higher living standards. It also does not reflect the quality of life of the people in this country have real income inequalities is a key factor that will make the poverty severity based only on low income groups, even though some people are not considered as poor (that is, the higher the income poverty line.It is because) the key factors that cause the problem in inequality between social classes and social problems as a matter of course, as is inevitable, even if the Government can reduce poverty by our customers. Income inequalities can be measured in several ways, such as using the variance of income. The proportion of the expenditure and income of the population of each group: income and expenditure of the entire population (Moriguchi & Saez, 2006; 2006, Yue & Whalley; Community economic development offices and the distribution of earnings, 2550 (2007)) Using the Theil index (& Conceicao Ferreira, 2000) and using the inequality coefficients, etc. However, This article will use the proportion of consumer expenditures and income for the populations of the expenditure and revenue of the entire population, and the equality of coefficients for the expenditures and revenues of the consumer population, to describe the situation of income inequalities in the country, Thai. The Office of community and economic development, income distribution, which is the agency responsible for measuring income inequalities in the country, Thai has split the population into five groups according to their income level classification and measurement of income inequalities based on population.(1) expenditure for the consumer of the population and (2) income of the population, taking up a whole 2 to calculate the proportion of consumer expenditures and income for the populations of each population group towards the expenditure and income of the entire population, then, consider the income inequalities.Dayadu from the difference of revenue and expenditure, the proportion of the group with the highest income and lowest income groups themselves. It also calculated the inequality coefficient values, between 0 and 1 if greater inequality coefficient values are much closer to 1 indicates that inequality of income, more and more are only (Office of national economic and social development, 2553 (2010))
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