Data in Real Life: The Middle Class

Math in the newsNPR’s Planet Money featured this story that posed the question “What is the middle class in your city?”

Box and Whisker Plot
Box and Whisker Plot—Identify the median, quartiles, and extreme values


Since we’ve recently talked about box and whisker plots as well as biases, take a look at the data presented in the article. How is it similar to a box and whisker plot? How is it different?

Do you think there may be biases in the way the data was collected? Does the article indicate any of these biases? Can you depend on article authors to identify biases in the data they reference? Can you trust that the data presented is factual?

Read the full article here

After reading the article and examining the data, is the student’s assertion accurate?

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