. Grade 7, Illustrative icon

Election Poll, Variation 2

Illustrative MathematicsVaries

This task introduces the fundamental statistical ideas of using data summaries (statistics) from random samples to draw inferences (reasoned conclusions) about population characteristics (parameters). In the task built around an election poll scenario, the population is the entire seventh grade class, the unknown characteristic (parameter) of interest is the proportion of the class members voting for a specific candidate, and the sample summary (statistic) is the observed proportion of voters favoring the candidate in a random sample of class members. There are three variations of this task. Variation 1 asks the students to demonstrate how to use a random number table to select a random sample of 40 students for a class list.

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