财务决策风险是每个生产经营者所必须考虑的问题，风险是通过围绕预期收益可能产生的离差量来度量。
Financial risk should be taken into account in course of manager's decision. The risk is usually measured by deviation around expected income.
因此，表达需求量的理想术语应该是平均离差和标准离差。
Thus, requirements should, ideally, be expressed in terms of a mean and standard deviation.
当我们计算极差，四分点离差和平均绝对偏差时，答案的计量单位与数据单位量相同的。
Earlier, when we calculated the range, the interquartile deviation, and average absolute deviation, the answers were expressed in the same units as the data itself.
当我们计算极差，四分点离差和平均绝对偏差时，答案的计量单位与数据单位量相同的。
Earlier, when we calculated the range, the interquartile deviation, and average absolute deviation, the answers were expressed in the same units as the data itself.
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