Monthly Archives: September 2013

Example: Boxplots of Olympic Athletes’ Age Distributions

Posted on September 30, 2013 by Suman Ganguli

We have discussed boxplots as a nice data visualization tool. Here is a good example of how a series of boxplots can be charted side-by-side as a way of comparing a large group of distributions. Via a blog called “Stats … Continue reading →

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Example: Map of NYC Household Median Income by Census Tract

Posted on September 24, 2013 by Suman Ganguli

We’ve discussed the median as a measure of central tendency of a distribution. It’s often used with income data. For example, a headline in the NYTimes a few weeks ago was “Median Income Rises, but Is Still 6% Below Level … Continue reading →

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Example: Histograms Showing “The Aging of America”

Posted on September 19, 2013 by Suman Ganguli

We discussed frequency distributions and histograms last week, and they will be central concepts in the course. Here are two examples using histograms–both show the age distributions of the US population over time: From the New York Times: “The Aging … Continue reading →

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