多元统计分析研究无机砷的富集规律

Study on Enrichment Rule of Inorganic Arsenic by Multivate Statiscal Technique

采用直方图及拟合曲线统计、指数分布假设检验、非参数密度估计等统计方法研究了无机砷在不同产品中的富集规律。根据密度函数估计曲线和含量经验分布函数曲线可以预测任意浓度下无机砷的发生几率和累积概率。

Enrichment rule of inorganic arsenic in different products was studied by multivariate statistical technique of frequency histogram, parameter distribution test of hypotheses, non - parameter density estimate. By the function curves of density estimate and empirical distribution, the risk and cumulative probability of inorganic arsenic in any concentration can be predicted.