基于显著性检验理论的地面密集度检验方法研究

Research on the Test Method for Ground Density Based on the Significance Test Theory

在地面密集度检验中存在两个问题,一是依据统计理论将受保护的结论作为零假设却不能得到具有说服力的地面密集度检验合格结论,二是检验的枢轴量不明确。对这两个问题进行分析探讨,提出采用逆向零假设,同时对地面密集度的两种表述方式应分别采用非中心t分布和X^(2)分布的检验方法。实例证明检验结论具有较好的可信性。其中,逆向零假设的观点可推广应用于鉴定试验中的诸如飞行可靠性等单边检验问题中。

There are two problems existing in the ground density test.One problem is that using the protected conclusion as a null hypothesis based on statistical theory can not obtain a convincing qualified conclusion for the ground density test,and the other problem is that the pivot quantity of the test is not clear.The two problems are analyzed and discussed,and the inverse null hypothesis is proposed to be adopted.At the same time,for the two expressions of ground density,the non-central t-distribution and x^(2) distribution test methods should be used respectively.The example proves that the test conclusion has better credibility.The viewpoint of the inverse null hypothesis can be popularized and applied in one-sided test problems such as flight reliability and others in qualification tests.