中文摘要：

文章简要介绍有分歧实验数据的几种数学处理方法，分析比较了这些方法各自的优缺点。在此基础上，提出了一种新处理方法——二次平均法。以^7Be和^90Sr的半衰期为例，说明了该处理方法的具体应用。

英文摘要：

Several methods of evaluating the discrepant data are described and compared in the paper. On the basis of these characteristics, a double-mean method of evaluating the discrepant data is proposed. The application is given by using the measured half-life for ^7Be and ^90Sr as an example.