(Excerpt from "The MathML Handbook" by Pavi Sandhu)
The content elements mean, median, mode, var, sdev, and moment represent the statistical concepts of mean, median, mode, variance, standard deviation, and moment, respectively.
For example, the mean of a distribution denoted by X would be represented as shown below:
<apply> <mean/> <ci>X</ci> </apply>
The standard deviation of the same distribution would be represented as shown below:
<apply> <sdev/> <ci>X</ci> </apply>
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