浅谈有关假设检验

Talking about Hypothesis Testing

在对正态总体的未知参数进行假设检验时,原假设与备择假设的确定是十分重要的。原假设与备择假设的选取并不是根据问题确定,而常常是需根据被检验的参数的估计量做一下预判,从而可以尽量保证检验结果的准确性。分析犯两类错误的概率时,因为通常采用的是显著性检验,因此,只能控制犯第一类错误的概率,而根据检验方法的不同,犯第二类错误的概率只能尽量的小。文中对原假设与备择假设的确定及两类错误的初步探讨学习有关假设检验的问题。

It is important for the determination of the null hypothesis and the alternative hypothesis to hypothesis testing of the unknown parameters of the normal population, the selecting of the null hypothesis and the alternative hypothesis is not determined by the specific problem , but often determined by the estimated value of the tested parameters to ensure the accuracy of the test results. Usually we use a significant test when we analysis guilty of two types of error probability, so we can only control the type one error probability. According to the different test methods, committing Type Ⅱ error probability can only be as small as possible. This paper talked about the determination of the null hypothesis and alternative hypothesis and discussed two types of errors to learn about hypothesis testing problem.