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A Statistical Test of the Accuracy and Consistency of Ordinations
Author(s) -
Wilson Mark V.
Publication year - 1981
Publication title -
ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.144
H-Index - 294
eISSN - 1939-9170
pISSN - 0012-9658
DOI - 10.2307/1936661
Subject(s) - ordination , consistency (knowledge bases) , nonparametric statistics , statistics , statistical analysis , statistical hypothesis testing , ecology , mathematics , econometrics , computer science , biology , artificial intelligence
A nonparametric statistical test of the performance of ordinations is adapted and extended from the work of Feigin and Cohen (1978). Two measures of ordination performance are accuracy (the tendency of ordination results to mirror correctly the true community structure) and consistency (the ability of the ordination to produce concordant results). Statistical estimates of accuracy and consistency are given and tests are developed for choosing among ordination techniques.