Nature, scope and sources of social and economic statistics: industrial statistics; trade statistics; financial statistics; price statistics and demographic statistics.  assessing social development and living standards - social indicators, e.g., education, occupation, sex, etc; economic indices - real income; cost of income; cost of living, and price indices.  National income accounting - gross national product; gross domestic product.  The UN system of National accounting.  Methods of estimation-income approach; production approach; expenditure approach.  National accounts - personal sector; production sector; government sector and international sector.  National income trends short and long-term changes.  Input-output analysis-construction of transaction matrix in quantitative and monetary values.  Input matrix-interpretation of technical coefficients.  The technology matrix -  interpretation of interdependence coefficients; multiplier analysis and price effects; consistent method and impact analysis.  Analysis of input-output tables - open and closed models; derivation and solution of input-output equations.