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煤炭化驗的準確度和精密度解釋
作者:    發布于:2022-05-24 07:17:19    文字:【】【】【

煤炭化驗的準確度和精密度解釋

準確度是指測定值和真實值的接近程度。分析值與真實值之間的差別越小,分析結果越準確,即準確度越高。但在實際工作中,真實值一般是不知道的,只能在同一條件下平行測定幾份,根據所得結果來判斷分析的準確度。如果幾次分析結果的數值比較接近,說明分析的精密度高。

精密度是指多次測定值接近程度。應該指出,精密度高不一定準確度好。


 
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