看到一个比较有意思的话题

  Julie ·  2009-03-12 18:10  ·  63027 次点击
WhatistheDifferenceBetweenACCURACYandPRECISION?
就我各人而言,常常把这两个概念混淆,但是这里却解释的很明白。可惜是我不知道怎么上传图片,论坛又不接受上传Word文件,所以只好压缩一下。
如果也有跟我一样的分不清这两个概念的,看一下,就清楚很多了。
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3 条回复

pianocao  2009-03-16 13:25
Thanks, Good topic.
Accuracy is a qualitative term relating the mean of the measurements to the true value, while precision is representative of the spread of these measurements. Even when we are precise and accurate, there will still be some uncertainty in our measurements; the scientists challenges are to evaluate the uncertainty and make this as small as possible. When the uncertainty of a measurement is evaluated and stated, then the fitness of purpose for a particular application can be properly understood.
muchuan  2009-03-12 20:30
准确度是表征多次测量算术平均值对参考值的偏离程度;精确度是表征多次测量测量值的离散程度。
ausir  2009-03-12 19:57
一个是准确度,一个是精密度.

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