Abstract:Reasoning across multiple representations and incorporating reversibility can enhance and reveal an in-depth view of a student’s understanding. In this paper, we explore how a school-age student reasons about the independence of two categorical variables using contingency tables and mosaic plots. This case study reveals some fine-grained reasoning that highlights the differences between mathematical and statistical thinking, shows an inclination to use a part-part or odds approach, and demonstrates how a mosai… Show more
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