When obtaing all available information is an impossible-or even unnecessary-task, sampling techniques may be the solution. Sampling data are easier and cheaper to obtain and, sometimes, much more reliable than the population data. Moreover, when trying to reach the population data one can be misled or may end up with a mistake-prone volume of information. When properly used, sampling techniques provide valuable information at a low cost. Mediana Consultoria is ready to work with its clients from sample planning to final results.