standard-error

standard error

noun Statistics.
the standard deviation of a distribution of a sample statistic, especially when the mean is used as the statistic.

Origin:
1895–1900

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World English Dictionary
standard error
 
n
statistics the estimated standard deviation of a parameter, the value of which is not known exactly

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
standard error  
The standard deviations of the sample in a frequency distribution, obtained by dividing the standard deviation by the total number of cases in the frequency distribution.
The American Heritage® Science Dictionary
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