从狭义上说，它是指特殊的统计技术：基尼系数(the Gini coefficient)、邹氏检验(the Chow test)等等。

More narrowly conceived, it can refer to particular statistical techniques: the Gini coefficient, the Chow test, and so forth.

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对各种电缆导管的性能进行了分析，叙述了电缆导管的检验以及摩擦系数的测试，并对电缆导管的埋地深度进行了计算。

The performance of various of cable conduits is analyzed. The inspection of cable conduits and test of friction coefficient is described. The buried depth of cable conduits is calculated.

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此外，用相关指数来检验曲线回归方程的拟合程度，而不采用在类似的研究中用相关系数来检验曲线回归这一不合适的方法。

Moreover, the fitting degree of curvilinear regression equation is tested by correlation index, in stead of correlation coefficient which has been unsuitably used for testing in similar works.

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