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2014-06-18T15:43:43+08:00

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Mean means the average. It is the number you get when you add all values and divide it by how many values you added. 

Median is the middle number when the given values are arranged in increasing order. If there are two middle numbers, the median is the average of the two middle numbers.

Mode is the most common value that appears in the given set of values.

Standard deviation expresses how each given value varies from their average.
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