5.1.1 Arithmetic (Arithmetic Mean, Average,)
average (arithmetic), that is a very important statistics. The arithmetic mean, median or represent the best information because 1) it is not biased. 2) a value that is consistent. 3) as a low variance and 4) are the most effective. I mean, they are limited in use as if the data is very scattered. Or some information is more or less as normal. Or the data is doubled. Mean it can not be a medium or a good representation of the data
, the arithmetic mean when data are not available frequencies. ()
In case the information is not frequency. Arithmetic can be obtained.
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