If it is a normal distribution, standard deviation (s) is observed.
若是正态分布，则进一步观察标准差。
There is no significant difference between the result of the method and that of micro-Kjeldahl′s method according tot test. The relative standard deviation is 3.1%.
经t检验证明，该方法的测定结果与微量凯氏定氮法无显著差异，测定结果的相对标准偏差为3.1%。
By using the sample mean range( R )instead of standard deviation of the sample( S )in"S " method, the"R " method is obtained in this paper.
在“S”法的基础上，利用样本平均极差R代替“S”法中的样本标准差S ，从而得到了“R”法，并且给出了相应的样本大小，及各种情况下的接收标准。
The second part is bout the option - GARCH method modeling: compared with history method, option-GARCH method improved B-S price formula regarding to standard deviation supposition.
第二部分介绍模型历史回顾：采用比较分析方法介绍目前国际上流行的几种计量方法，重点分析介绍了基于期权定价方法的结构模型。
The second part is bout the option - GARCH method modeling: compared with history method, option-GARCH method improved B-S price formula regarding to standard deviation supposition.
第二部分介绍模型历史回顾：采用比较分析方法介绍目前国际上流行的几种计量方法，重点分析介绍了基于期权定价方法的结构模型。
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