7.5.D.22 - Using Sample Data to Compare the Means of Two or More Populations – Exit Ticket

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Suppose that Brett randomly sampled 12 tenth-grade girls and boys in his school district and asked them for the number of minutes per day that they text. The data and summary measures follow.

Draw dot plots for the two data sets using the same numerical scales. Discuss the amount of overlap between the two dot plots that you drew and what it may mean in the context of the problem.

Compare the variability in the two data sets using the MAD. Interpret the result in the context of the problem.

From 1 and 2, does the difference in the two means appear to be meaningful? Explain

From EngageNY.org of the New York State Education Department. Grade 7 Mathematics Module 5, Topic D, Lesson 22. Internet. Available from https://www.engageny.org/resource/grade-7-mathemat...; accessed 8/Apr/2016.