It is considered difficult to analytically prove whether sampleprobability weighted moments with discrete series are unbiased estimators.
人们普遍认为要从理论上通过数学分析的方法来论证不连序系列样本概率权重矩的偏倚性是很困难的。
2
Experiments, Outcomes, Sample Spaces, Events, Probability, Axioms of Probability.
试验，结果，样本空间，事件，机率，机率公理。
3
Because of the phenomenon that the negative self-scattering cross sections cause the negative probabilitysample, a nonnegative corrected method is put forward and validated by the benchmark problems.