How descriptive statistics works
Find count, mean, median, range, and population standard deviation.
Formula and convention
Mean = sum / count. Population variance = sum((x - mean)²) / count; standard deviation is its square root.A worked example
The sample has mean 5, median 4.5, and population standard deviation 2.
Scope and precision
Population, not sample, standard deviation. All observations are equally weighted; missing and non-numeric values are rejected.
Displayed results may be rounded. Inputs are processed locally and are not stored by this site. Keep the original values if you need to reproduce the result.
Why might another tool give a different result?
Compare unit definitions, rounding, period assumptions, and input values. This page states the convention used by this calculator.