variance ratio test

This paper proposed the multiple Mean-Variance ratio test of which is based on the "Asset Performance Evaluation with Mean-Variance Ratio" of Bai ( 2008), completing the theory of Mean-Variance Ratio test.

本文在Bai（2008）提出的均值方差比（MVR）检验的基础上，完善了小样本检验的理论，提出了k个均值方差比的多元MVR假设。

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The variance ratio test, mean value test and interval estimations are introduced in analysis of the results.

并采用方差比校验、均值校验和区间估计方法处理所得的结果。

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Poor signal to noise ratio commonly resulted from real test shot gathers has influences on difference directly obtained shooting parameters variance;

3通常实际实验炮集数据内具有较低的信噪比，影响直接获得激发参数变化的差异；

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Optimum Ratio is obtained by orthogonal test and variance analysis for different factors and levels.

通过对型砂各因子和水平的正交试验和方差分析,得出了最佳的配比.

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