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Data Transformation as a Means to obtain Reliable Consensus Values for Reference Materials
Author(s) -
CHRISTIE OLAV H. J.,
ALFSEN KNUT H.
Publication year - 1977
Publication title -
geostandards newsletter
Language(s) - English
Resource type - Journals
eISSN - 1751-908X
pISSN - 0150-5505
DOI - 10.1111/j.1751-908x.1977.tb00857.x
Subject(s) - transformation (genetics) , histogram , modal , data transformation , mathematics , value (mathematics) , interval (graph theory) , statistics , polynomial , confidence interval , skewness , algorithm , computer science , data mining , mathematical analysis , artificial intelligence , image (mathematics) , combinatorics , biochemistry , chemistry , polymer chemistry , data warehouse , gene
Two different methods for estimating modal values of skewed distributions have been applied to round robin data on reference materials. The first method involves polynomial fitting to a histogram, and the second is confined to data transformation to overcome the problems connected with treatment of data characterized by skewed distributions. The transformation method (Gamma) allows the construction of a confidence interval which is non‐symmetrical with respect to the central value of skewed distributions.