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Author Hanson, Richard J.
Source ACM Digital Library
Content type Text
Publisher Association for Computing Machinery (ACM)
File Format PDF
Language English
Subject Keyword Mean ♦ Removing data ♦ Updating estimates ♦ Least squares ♦ Givens transformation ♦ Standard deviation
Abstract By considering the (sample) mean of a set of data as a fit to this data by a constant function, a computational method is given based on a matrix formulation and Givens transformations. The (sample) mean and standard deviation can be updated as data accumulates. The procedure is numerically stable and does not require storage of the data. Methods for dealing with weighted data and data removal are presented. When updating the mean and square of the standard deviation, the process requires no square roots.
Description Affiliation: Washington State Univ., Pullman (Hanson, Richard J.)
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2005-08-01
Publisher Place New York
Journal Communications of the ACM (CACM)
Volume Number 18
Issue Number 1
Page Count 2
Starting Page 57
Ending Page 58


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Source: ACM Digital Library