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送交者: gyro 于 2011-01-04, 12:15:56:
回答: 谈谈测量问题. 由 OO8 于 2011-01-04, 11:36:01:
For completeness you should also talk about the visual estimate people do when taking measurement. If the smallest interval on a ruler is 1cm, people would frequently give a number like 7.3cm or 7.8cm. Intuitively the uncertainty is at most 0.2cm, say. If we ask many people to do the measurement and then average, what is sigma here?
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