METHOD AND PROGRAM FOR DETERMINING TOTAL NUMBER OF SPECIMEN PARTICLE EXTRACTED FROM POPULATION

摘要

PROBLEM TO BE SOLVED: To provide a method for determining a total number of specimen particles to be extracted from a population for acquiring a prescribed, reliable distribution of grain diameters and to provide its program. SOLUTION: Ratios of a lower limitμg1and an upper limitμg2within a confidence interval on a population geometric mean diameterμgto a geometric mean diameter xgof specimens and ratios of a lower limitσg1and an upper limitσg2within a confidence interval on a population geometric standard deviationσgto a geometric standard deviation sgof the specimens are determined on the basis of the following equations to determine each number N of particles. A maximum value among them is taken as the total number of specimen particles to be extracted from a population. COPYRIGHT: (C)2011,JPO&INPIT