Box plots are another statistical representation of data. They are useful for visually representing the maximum, minimum, upper quartile, lower quartile and median of the data. The boxes are based on the standard deviation of the data. The example of a box plot above compares the salaries of an engineer and a person working in marketing through the use of box plots. Clearly the median salary of someone working in marketing is higher than that of an engineer. These plots can be very useful for plotting spatial data too.
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