Friday, April 12, 2013

Box Plot


A Box Plot is a graph that displays five important numbers. The maximum value, the minimum value, upper quartile, lower quartile, and the median number are all displayed. These graphs are useful in displaying outliers and seeing how the data is distributed. In the box plot above, a very wide range of data points are displayed for peoples' IQ's. The data is fairly evenly distributed with almost 50% in the middle or the upper and lower quartile at about 100. The minimum is around 67 and the maximum is over 125. 

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