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        Variation About the Mean: The Boston Harbor Project

        Investigate how the Massachusetts Water Resources Authority has determined that their water treatment facility has had a positive impact on Boston Harbor. This video focuses on how mean, standard deviation, and confidence intervals are used to demonstrate measureable improvements in the water quality, taking math out of the classroom and into real world problem solving. This resource is part of the Math at the Core: Middle School Collection.

        See this activity on Annenberg Learner's professional development course for teachers.

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