# standard error of the mean

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## stan·dard er·ror of the mean (SEM),

a statistical index of the probability that a given sample mean is representative of the mean of the population from which the sample was drawn.

## standard error of the mean

(in statistics) an indication of how well the mean of a sample estimates the mean of a population. It is measured by the standard deviation of the means of randomly drawn samples of the same size as the sample in question.

## stan·dard er·ror of the mean

**(SEM)**(standărd erŏr mēn)

Statistical index of the probability that a given sample mean is representative of the mean of the population from which the sample was drawn.

## stan·dard er·ror of the mean

(standărd erŏr mēn)Statistical index of probability that a given sample mean is representative of mean of the population from which the sample was drawn.

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