不难设想有(譬如)这样的民意测验和调查，它们要求用户对每个选项提供数值评分(从1到100)，对此，参数性的统计检验就比较合适。
It is easy to imagine polls and surveys, for example, that would require users to provide numerical ratings (1 to 100) for each option and for which parametric statistical tests would be appropriate.
通过算例表明与传统的参数估计概念的分散系数相比，假设检验观点的分散系数更趋近于实际统计值。
Compared with the Sf obtained from the concept of parameter estimation, the Sbased on the idea of hypothesis test is'much colser to the actual statistical value.
秩和检验法是非参数统计法中的一种重要方法，是对成组数据t 检验的一个补充。
The rank sum test is an important non parametric statistical method that can be used to analyze experimental data in animal ecology.
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