THE RELATIONSHIP OF QUARTILE CHARACTERISTIC VALUES BETWEEN DENSITY SURVE AND DISTYIBUTION CURVE

THE RELATIONSHIP OF QUARTILE

CHARACTERISTIC VALUES BETWEEN DENSITY

SURVE AND DISTYIBUTION CURVE

樊民强;刘丽俭;张荣曾

【期刊名称】《煤炭学报：英文版》 【年(卷),期】1998(004)002

【摘要】The characteristics of density yield curve of coal and distribution curve of products canbe described with median, quartile deviation, the quartile measure of skewness and kurtosis likeK. On the basis of 16 groups of coal density composition data and their jigging stratification dataderived from the pilot jig, the regression analysis has been done for the relationship between thecharacteristic values of the density curve and the characteristic values of the distribution curve.The results show as follow: (1) The bigger the skewness of the density curve, the bigger theprobable error (Ep) and imperfection (I) are. (2) The bigger the median of density curve, thesmaller the probable error or imperfection is. (3) The characteristic values of density curvehave no influence on the kurtosis K of the distribution curve. 【总页数】6页(85-90)

【关键词】四位特征值;密度曲线;分布曲线;选矿;煤矿 【作者】樊民强;刘丽俭;张荣曾 【

作

者

单

位

】