Through the development of this learning session it is intended to build in the student (a) the information necessary to understand and represent the characteristics of a study population, to associate variables (discrete qualitative and quantitative) Consider the way in which students have the characteristics, recognize the study variables, their classification and, if they are able to distinguish and create other examples similar to those put in class. On the other hand, for the better understanding of the study of the characteristics of a population, pictograms, horizontal and vertical bar graphs will be created, some summary measures will also be used to understand a set of data, which will stimulate mathematical reasoning.