Determination of statistical frequency distribution of geochemical data

Abstract

New method to calculate the statistical frequency distribution of geochemical data with microcmoputer was developed by using the CHEBYCHEV or SPLINE function approximating the cumulative frequency distribution and its first derivative without any assumption on the type of statistical distribution of data.
The method was applied to several sets of data on the geochemical exploration of some gold-silver mineralization zones in Japan. Computation of frequency distribution was ascertained to be very useful for statistical treatment of geochemical data, not only in defining the geochemical anomalies, but also in estimating the type of statistical distribution of data.