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September 21, 2014

September 21, 2014

Posted by **Maria** on Tuesday, August 20, 2013 at 10:48pm.

- Physic, -
**Elena**, Wednesday, August 21, 2013 at 2:22pmFrom

http://teacher.nsrl.rochester.edu/phy_labs/appendixe/appendixe.html

Error in experiments have several sources. First, there is error intrinsic to instruments of measurement. Because this type of error has equal probability of producing a measurement higher or lower numerically than the "true" value, it is called random error. Second, there is non-random or systematic error, due to factors which bias the result in one direction. No measurement, and therefore no experiment, can be perfectly precise. At the same time, in science we have standard ways of estimating and in some cases reducing errors. Thus it is important to determine the accuracy of a particular measurement and, when stating quantitative results, to quote the measurement error. A measurement without a quoted error is meaningless. The comparison between experiment and theory is made within the context of experimental errors.....

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