The statistical view currently does not support aggregate functions like SUM, MAX, distinct operations or set operation like UNION, EXCEPT or INTERSECT.
The statistical methods for categorical data have been discussed with examples in clinical papers. we ought to pay attention to selecting rank sum test for data of ordinal categories.
以几篇临床论文实例讨论分类断据的统计方法。对有序分类数据注意选择和检验。
3
A new on aim control method, cumulative sumstatistical control (CUSUM) was introduced. The design of CUSUM was presented and its application in polyester industry was discussed.