如果样本容量充分大，就不必做正态假设。

If, however, the sample sizes are large enough, we do not need the assumption of normality.

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在正态假设的基础上推导了模型“残差熵”的估算公式，并给出了具体的应用方法。

Then, the estimation expressions of residual entropy on normal distribution hypothesis are given, and its application approaches are illustrated.

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结果表明，研究区土壤砷为正偏态分布，经高斯非线性转化后，符合二阶平稳假设。

The soil as of the study area was positive skew distribution, tally with second steps stable supposed, after Gaussian non-liner change.

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We often assume in finance that random variables, such as returns,are normally distributed.

金融学中我们常假设随机变量,例如收益率,是服从正态分布的

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