The paper is intended to be, on the one hand, a tool in facilitating the decision-making and managerial process, because it presents the statistical terms in alphabetical order, these being easy to identify, calculate and interpret, and on the other hand, the paper is a course of statistics, a new form of presentation of the theory of statistics, coming to the aid of students, especially those studying economic disciplines, but not only, to understand, apply and retain statistical theory, forming the habit of economic reasoning based on calculations rigorous statistics. Thus, the paper is addressed especially to the students of the Academy of Economic Studies, from all the faculties that study Statistics. It is structured in chapters, in alphabetical order.