Description
Students are provided three data sets and asked to construct dot plots for each in order to study the distributions. A symmetrical or a nearly symmetrical distribution emerges from the first data set. Students determine that the mean and median are nearly the same in this distribution. In the second and third data sets, a nonsymmetrical distribution is given. Students determine that the mean and the median are not the same. They are asked to explain why the two measures of center are not equal.
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From EngageNY.org of the New York State Education Department. Algebra I Module 2, Topic A, Lesson 2.
Available from engageny.org/resource/algebra-i-module-2-topic-lesson-2; accessed 2015-05-29.
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