Fisher information is a measure of the information inside a random variable about an unknown parameter. Mutual information shows the dependence between two variables and relative entropy shows the difference between the two probability distributions. In this paper, Fisher information is generalized for mutual information and relative entropy and the monotonicity properties of Fisher information are examined. Then concepts such as information correlation and information correlation coefficient are introduced. Finally, it is shown that Shannon differential entropy, which measures the behavior of a random variable, and conditional Fisher information are used to determine the probability of estimation error.

Objective: Income inequality affects consumption structure via changes in the composition of expenditure basket. Shocks, fluctuations, disparities, and dispersions of income inequality, is expected to be transmitted to consumption expenditures. These shocks might induce inequalities in consumption expenditures. This paper tries to measure the amount of such consumption expenditures inequalities that are derived from income inequality.Method: To measure the consumption expenditures inequality and income inequality, the variance of logs is employed. For this purpose, Iranian urban households' data of the period of 1982 to 2007 is used. To analyze relations between variables, panel data methodology is applied. Findings: All fluctuations of income distribution do not translate in consumption expenditure distribution. Conclusion: The distribution of households' consumption expenditure in comparison to the distribution of income is less subjected to fluctuations and variations.

Globalization has two aspects. One of it's most important aspects, which has a severe impact on the "prevention of poverty and inequality", is the mobilization and release of capital, This movement not only prevents the workforce from obtaining the minimum standard of living, but also, through the high bargaining power in the area of tax reduction, decreases the power of government to create the infrastructure for the workforce and the population suffering from inequality.The decrease in social protection will change income poverty to ability poverty and consequently will increase the severity of overall poverty and inequality. At this point, globalization, with its liberal nature, has a negative impact on the quality living for the majority of the population. Many have come to the conclusion that the remedy lies in changing the trend of globalization from a market-oriented approach to a people-oriented approach. The only solution is to begin by returning the power of the government to establish extensive social protection, as well as social supervision of the capital of the world.

On the basis of macroeconomic consumption theories, consumption behavior as compared to income is more stable. Overtime income inequality that is, appeared as fluctuation and dispersion in income, would affect consumption expenditure. In this paper the extent of consumption expenditure inequality that are caused by income fluctuation and dispersion was analyzed. The inequalities of household consumption expenditure were analyzed for eight goods and services categories. Urban household budget panel data for the years of 1982 to 2007 were used and causal relationship between the variables analyzed. The results showed that not all of the fluctuation and dispersion in income were transferred to consumption expenditure. Therefore, consumption expenditure was less dispersed than income.