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关于对数字有效位数的要求

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摘要 有效数字是在测量中所能得到的有实际意义的数字。一个有效数字构成的数值，只有末位数字是估计数字，其余各位数字都是准确的。同一指标数字的有效位数应一致。对以平均数±标准差（露±s）表示的数据，要考虑个体的变异，一般按标准，差的1／3来确定保留的有效位数。如（3．62±0．42）kg，标准差0．42的1／3为0．14，有效位数为小数点后1位，
出处 《中华产科急救电子杂志》 2015年第1期18-18,共1页 Chinese Journal of Obstetric Emergency（Electronic Edition）
关键词 位数 标准差 平均数
分类号 R311-4 [医药卫生—基础医学]
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参考文献18

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二级参考文献15

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中华产科急救电子杂志
2015年 第1期

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