Practices of the Random Variable Proposed in the Chilean Mathematics Curriculum of Secondary Education

Working with statistical data from real contexts has become fundamental in school-level statistics, because it enables the development of reasoning. In this regard, notion random variable is to analysis. Thus, aim research was characterise meanings concept that are promoted Chilean mathematics curriculum for secondary education. To achieve this, we examined representativeness intended by relation reference concept, using theoretical and methodological notions onto-semiotic approach. The findings show were not fully represented textbooks national curriculum, most meaning as a interest. Regarding types representation, observed graphical tabular representations neglected. Lastly, noticed definitions variable, its classifications, differences omitted almost entirely textbooks.