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This paper is from Session 2B: Successfully implementing statistical education in secondary schools

which comes under Topic 2: Statistics education at the school level             Full topic list

(Tuesday 4th, 16:00-18:00)

Meaning of the dispersion and its measures in secondary education

Presenter

• Juan Ortega-Moya (Spain)

Co-author

• Antonio Estepa-Castro (Spain)

Abstract

In this paper we present an onto-semiotic macroscopic analysis of the measures of dispersion: range, interquartile range, average deviation, variance, standard deviation and coefficient of variation by following the theoretical framework of the Theory of Semiotic Functions. This research has been carried out with a sample of textbooks from the most representative publishers used by Spanish second-cycle Secondary students of 15 and 16 years of age. The paper finishes by presenting several useful conclusions for the planning of the teaching process and for the research on the issue.