Mathematical Objects Linked to Random Variable and its Applications on Probability Distributions in Chilean Secondary School Textbooks

This paper analyzes the treatment of the random variable and its applications on probability distributions in Chilean high school textbooks, from the Ontosemiotic Approach to Mathematical Knowledge and Instruction. Thus, a model is used for the analysis of mathematical objects in the Chilean textbooks and the Chilean school curriculum by means of content analysis. The results show a diversity of languages, concepts, propositions, procedures and arguments linked to the topics, although some of them are identified in the curriculum and excluded in books or inversely, showing a lack of coherence between the documents.