Statistics & Probability
Standard Error (from s, n)
Standard error from std deviation and sample size.
Formula
Formula
SE = s√n
Variables
| Symbol | Definition | Type & range | Units | Role |
|---|---|---|---|---|
| s | sample std deviation | s ≥ 0 | — | input |
| n | sample size | integer, n ≥ 1 | — | input |
| SE | standard error of the mean | SE ≥ 0 | — | result |
Try it yourself
Interactive calculator
Worked examples
Example 1
Givenstd dev s = 15, sample size n = 100
Result1.5
Example 2
Givenstd dev s = 4.2, sample size n = 36
Result0.7