In its 3rd edition, the book maintains its simple and instructional character, making it user-friendly and accessible. The development of each chapter resembles classroom teaching, without lacking rigor regarding definitions, the foundations of concepts and procedures, while keeping the tone, simplicity, and liveliness of spoken language.

Descriptive statistics, combinatorics, the concepts of probabilities, random variables, distributions, confidence intervals, sampling, hypothesis testing, and correlation coefficients, along with linear regression models, are presented in an understandable manner.

Furthermore, this edition is enriched with additional examples in each chapter for better understanding and assimilation of the material, as well as with solutions to the exercises proposed for practice at the end of each chapter, providing full support to students and learners.