The main goal of this project is to help students to build skills in statistical analysis by applying the descriptive statistics tools to estimate mean wages by occupational employment group, and then use those estimates and the inferential statistics to infer the behavior of wage differentials across occupational employment groups. Students are expected to write their final research report which must describe the population of interest to the analysis, the data collection procedure, the implementation of the statistical procedure to estimate the population parameters (mean wage differentials) using the sample data, the interpretation of the results, and the recommendations of the policy.