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Table 5 Results of posterior predictive tests indicating the ability of different approaches to reduce compositional bias in mitochondrial amino acid data sets.

From: The complete mitochondrial genome of Flustra foliacea (Ectoprocta, Cheilostomata) - compositional bias affects phylogenetic analyses of lophotrochozoan relationships

Approach Remaining taxa Z score p value Number of taxa with significantly deviating amino acid composition
Original data set 49 8.657 0.000 40
Exclusion of the 10 taxa with the most strongly differing amino acid composition 39 7.308 0.000 32
Recoding using 9 minmax chi-squared bins 49 8.690 0.003 38
Recoding using 6 minmax chi-squared bins 49 7.196 0.005 21
Recoding using Dayhoff groups 49 11.285 0.000 30