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Wald statistics of explanatory metaproperties in classification problems. Green indicates strong evidence of relationship between a metaproperty and the response variable of the classification (Wald statistic <0.02). Yellow indicates moderate to weak evidence (Wald statistic: 0.02–0.06). Red indicates no evidence (Wald statistic >0.06). Blue indicates a metaproperty completely separated classification groups (100% accuracy)
