systematic error

noun Statistics.
a persistent error that cannot be attributed to chance.
Compare random error.


Origin:
1890–95

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Main Entry:  systematic error
Part of Speech:  n
Definition:  a persistent statistical error having a nonzero mean that cannot be attributed entirely to chance but to inaccuracy inherent in the statistical system
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Example sentences
There is obviously a serious systematic error of unknown origin, possibly the urban heat island effect, in these data.
However, this does need to be confirmed for some kind of systematic error.
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