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Lung disease, indigestion, and two-way tables. (English)
Investig. Math. Learn. 8, No. 2, 1-16 (2016).
Summary: This paper considers the responses of 115 school students to two problems based on information provided in two-way tables. In each case the question asks if one of the variables involved depends on the other. Contextual knowledge might suggest a dependent relationship in both but in one problem the data show independence while in the other the data imply an inverse relationship. A wide range of solution strategies illustrates the cognitive complexity dealing with information in two-way tables.
Classification: K40 M60
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