[ noun ] (statistics) the ratio of the number of observations in a statistical category to the total number of observations
Used in print(A.L. Kroeber, "Semantic Contribution of Lexicostatistic...)
Thomas also presents a simple equation for deriving an index of persistence , which weights not_only the number of stems ( ' roots ' ) per meaning , but their relative_frequency .
As to relative_frequencies of competing roots ( 7 - 1 vs. 4 - 4 , etc_. ) , Thomas with his ' weighting ' seems to be the first to have considered the significance this might have .