e/Assumed mean

Information
has gloss	eng: In statistics the assumed mean is a method for calculating the arithmetic mean and standard deviation of a data set. It simplifies calculating accurate values by hand. Its interest today is chiefly historical but it can be used to quickly estimate these statistics. There are other rapid calculation methods which are more suited for computers which also ensure more accurate results than the obvious methods.
lexicalization	eng: assumed mean
instance of	(noun) a statistic describing the location of a distribution; "it set the norm for American homes" norm, average