环境监测数据的数值修约规则探讨

Discussion on Numerical Rounding Rules for Environmental Monitoring Data

数值修约问题看似简单,实则行之不易。由于目前并没有一种统一的数值修约方式可以处理实际工作中遇到的各种类型的数据,这就导致环境监测报告及科研论文中普遍存在着分析数据数值修约不规范的问题。分析阐明了数值修约的内涵:一是修,是保留几位的问题;二是约,是如何舍入的问题。在此基础上,提出了数值修约的两条原则:准确性和保守性。最后,总结了环境监测常用数据的数值修约规则。

The problem of rounding off numerical values may seem simple,but it is not easy to implement.Due to the lack of a unified numerical rounding method that can handle various types of data we encounter in practical work,there is a common problem of nonstandard numerical rounding in environmental monitoring reports and scientific research papers.The article expounds the connotation of numerical rounding.The first question is how many digits are retained for numerical values,and the second question is the rounding method for numbers.And put forward two basic principles of numerical rounding:accuracy and conservation.Finally,the numerical rounding rules of common data in the environmental monitoring are summarized.