在元素偏离对称分布或分析数据存在粗差的情况下,传统的元素丰度计算方法(包括“加权”均值法)是非常不稳健的;它的计算结果对少数的极端数据极为敏感,所得的丰度值可重复性很差,有时甚至是不相容的。这里介绍的稳健估计,有效地克服了上述缺点,目前它至少能解决这样的问题:一 In the case of elemental deviations from symmetrical distributions or in the presence of gross errors in analytical data, traditional elemental abundance methods (including “weighted” means) are very unsteady; their results are extremely sensitive to a few extreme data, Abundance repeatability is poor, sometimes even incompatible. The robust estimation presented here effectively overcomes the above drawbacks and at the very least it addresses the problem of