Stata is a complete, integrated statistical package that provides everything you need for data
analysis, data management, and graphics. Stata is not sold in pieces, which means you get
everything you need in one package without annual license fees.

Stata 11 adds many new features such as multiple imputation, factor variables, generalized
method of moments (GMM), competing-risks regression, state-space modeling, predictive
margins, a Variables Manager, and more. Find out more about these features at New in Stata
11.