===Glossary of "Cladistics (2nd ed.)" by [[Kitching_Forey_Humphries_Williams_1998|Kitching et al. (1998)]]===
===Glossary of "Cladistics (2nd ed.)" by [[Kitching_Forey_Humphries_Williams_1998|Kitching et al. (1998)]]===
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*A measure of the amount of [[homoplasy]] in a [[character]] relative to a given [[cladogram]]. The consistency index is calculated as
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*A measure of the amount of [[homoplasy]] in a [[character]] relative to a given [[cladogram]]. The consistency index is calculated as the ratio of ''m'', the minimum number of steps a character can exhibit on any cladogram, to ''s'', the minimum number of steps the same character can exhibit on the cladogram in question. See also [[ensemble_consistency_index|ensemble consistency index]], [[retention_index|retention index]].