
(from the article `analysis`) ...of variability is the range, given as the difference between the largest and the smallest results. It has no statistical significance, however, ...
Found on
http://www.britannica.com/eb/a-z/a/130

The absolute value of the difference from the mean for each data value, summed, then divided by the number of values. A somewhat more robust estimator of the of the so-called 'second moment' than standard deviation. See also: Mean, Standard Deviation, Statistic.
Found on
https://www.encyclo.co.uk/local/20687
No exact match found.