Because some products show no failure in the random truncation test period, this paper USES the mean rankordermethod to calculate the empirical cumulative distribution function.
考虑随机截尾试验中有些试验产品无故障数据出现,提出采用平均秩次法计算经验分布函数。
2
Based on the condition, to adjust rankorder with semiparametric method for statistical inference is more reasonable in two sample rank test.
根据这一情况,本文用半参数方法来校正秩次,使两组秩和检验的统计推断更为合理。
3
Rank correlation analyses show that all of the runoff sequence change with tendency, and the sudden change appeared in 1948, as concluded by order cluster analysis method.