Standard Error Calculator

You can use this Standard Error Calculator to calculate the standard error of the mean for a given set of numbers.

Please provide numbers separated by comma (e.g: 1,2,3,4,5), space (e.g: 1 2 3 4 5) or line break and hit the "Calculate" button to see the results.

Standard Error (SE) Calculator

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Standard Error Formula

The Standard Error Calculator uses the following formula:

SE x = s / sqrt( n )

Where:

SE x  is the standard error of the mean,

s  is the standard deviation of the sample

n  is the sample size.

Example:  Assume the population standard deviation is 36. Calculate the standard error of the mean for a sample size of 49.

Solution: s = 36, n = 49

SE x = s / sqrt( n )

SE x = 36 / √49

SE x = 36 / 7 = 5.1428

Therefore, the standard error of the mean for a sample size of 49 is 5.1428

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