Summary Statistics

Central tendency and dispersion

Summary statistics provide a quick summary of data and are particularly useful for comparing one project to another, or before and after.

There are two main types of summary statistics used in evaluation: measures of central tendency and measures of dispersion.

Measures of central tendency provide different versions of the average, including the mean, the median and the mode.

Measures of dispersion provide information about how much variation there is in the data, including the range and the standard deviation.





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Updated: 14th January 2014 - 1:50am
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