Term: Standard Error
Last Updated: 2009-08-27
In statistics, the standard error of a measurement, value or quantity is the standard deviation of the process by which it was generated, after adjusting for sample size. In other words the standard error is the standard deviation of the sample mean. The standard error of a sample from a population is the standard deviation of the sampling distribution and may be estimated by the formula:
It is primarily used to determine the confidence interval of a parameter, such as a mean or rate, as it defines the range of expected values for the measurement.
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