用数理统计的方法处理试验数据的异常值

Treatment of Abnormal Test Data by Mathematical Statistics

在电线电缆的一组试验数据中,有时候会出现个别的异常数值,从直观上看,这个数据要比其它数据小许多或者大很多。在处理试验数据时,对于这样的个别异常值,是否要剔除?如果单纯凭直觉判断,似乎缺乏理论上的依据。文中简要介绍了应用数理统计的方法,对电线电缆试验数据异常值进行剔除的工程处理方法,并举例说明和进行计算。

Sometimes,an abnormal datum may be seen in a set of test data for wire and cable. Outwardly, the abnormal datum may be much greater or smaller than the value of any other datum, Shall we discard this abnormal datum in the treatment of test data？ Judgement by instinct lacks theoretical ground. This paper presents a method to identify the abnormal datum by mathematical statistics, Examples were given and calculations were made.