This course uses statistical methods, both stochastic and deterministic, to analyze topics such as productivity, efficiency and growth at micro, sectorial, and macro level. To begin with, first it will be examined data from firms that will be useful for the mentioned three-levels study. As regards the efficiency analysis of productive units, such data will be employed in order to evaluate mergers and acquisitions of plants and firms and management of productive factors. To this aim, efficiency will be evaluated from the sides of costs, profits and revenues. As for the sectorial analysis, static and dynamic models will be considered to allow for forecasts and simulations in each sector for variables like production, labour, capital, raw materials, prices and capital gains. Coherently, an aggregate analysis on the production, growth and prices will follow. We will also deal with ICT and technical progress in the production process by considering how and if the associated externalities are effective. Specific focus on private, in particular banking, and public sectors will contribute to explain the relationship between economic structure and the actual crisis. We will use the following techniques for data analysis: panel data econometrics, time series analysis, methods for differential equation systems, non parametric methods. Lessons will refer to Italian and European data in the international context.