type I error

However, due to the limitations of data and methods, the model also has shortcomings, such as neglecting the difference between the sub-sectors in the transport sector, and neglecting the difference cost between the error type I and type ⅱ.

但是由于数据和方法的限制，该模型也有不足之处，如没有考虑交通运输业内子行业之间的差异，没有考虑第一类错误和第二类错误的成本问题等。

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Conclusion: How to select the method for multiple comparisons of rates in order to control the type ⅰ error or type ⅱ error is introduced.

结论：给出了控制Ⅰ型误差、Ⅱ型误差或误差3种不同情况下，多个实验组与对照组比较及多组间的两两比较方法的不同选择。

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Results The type ⅰ error and type ⅱ error estimate of 8 one way multiple sample tests are given.

结果给出了8种检验方法的Ⅰ型和Ⅱ型误差估计值。

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Based on meshing theory, a formula is derived for calculating index error of worm-type cam follower ( i.e.Tindex plate) under influence of actual worm-type cam profile and dimensions.

以啮合理论为基础，导出了蜗式凸轮机构从动件（即分度转盘）在凸轮实际轮廓和实际机构尺寸诸因素的影响下，分度误差的计算公式。

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