摘要:This document deals with some issues crucial in managing household expenditure surveys. Researchers managing expenditure surveys are confronted with decisions about how to estimate and aggregate prices, the most appropriate and economically relevant commodity grouping, the statistical representation of demographic information, and how to choose between total expenditure and income in order to understand consumption behaviour as well as improving the precision of the measurement of poverty. The study also introduces some popular non-parametric techniques to estimate densities and Engel relationships as a tool for controlling the accuracy of the data management and as a complement to classical parametric methods. These issues will be treated in order.