Standard Error: SD = 1, n = 30
For standardized data (SD = 1) with sample size 30, the standard error is approximately 0.183.
How to use this tool
- Enter standard deviation (s) and sample size (n) in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your standard error (se) and the full breakdown beneath it.
Calculate the standard error for a small sample of 30 drawn from a standardized distribution with SD = 1.
Frequently asked questions
- What is the difference between standard deviation and standard error?
- Standard deviation (SD) describes the variability of individual data points around their mean. Standard error (SE) describes the variability of the sample mean itself — it shrinks as sample size grows: SE = SD / √n.