The result shows that measurement standard error reaches minimum 0.027 for most milk sample and satisfies the national criterion of protein detection when dilution ratio ranges from 6.2 to 7.4.
结果表明，对于大多数的牛乳样品，当其稀释倍率在6.2至7.4范围内时，测量标准偏差达到最小值0.027，满足蛋白质检测国家标准。
According the error processing criterion, if the measurement error is 3 times larger than the standard error, the singular data can be deleted and substituted with arithmetic average value.
依据拉依达准则，剔除测量误差大于3倍标准差的奇异数据并以算术平均值代替，简便易行。
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