This is a 5-unit course (3 units for the lecture and 2 units for the laboratory) for the BS in Chemistry students. This course aims to deepen the knowledge and skills of the students in analytical chemistry, particularly in the evaluation and assurance of quality in analytical data. It includes the application of statistics for the evaluation of the results of chemical analysis, as well as the principles and methods of quality assurance applied to the analytical chemistry laboratory. It also presents the principles of sampling and sample preparation, and the principles of calibration