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Estimation of true moments from truncated data
Author(s) -
Skopp Joseph
Publication year - 1984
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690300121
Subject(s) - truncation (statistics) , moment (physics) , weighting , mathematics , point (geometry) , method of moments (probability theory) , second moment of area , truncation error , moment distribution method , estimation , point estimation , mathematical analysis , mathematical optimization , statistics , geometry , physics , engineering , parametric statistics , systems engineering , classical mechanics , estimator , acoustics
Moment analysis is a powerful tool in reactor bed analysis. Weighted moments is a technique which has been introduced to increase the accuracy of moment estimation. The supposed advantage of weighted moments is reevaluated utilizing an optimum truncation point. The resulting coefficient of variation in the moment estimates is shown to be superior to an arbitrary truncation point for all weighting factors. When an optimum truncation point is used, little advantage is observed for weighted moments.