Standard Error Calculator
Calculate the standard error of the mean from a list of numbers, with the sample standard deviation and an approximate 95% confidence interval.
Result
The 95% interval uses z = 1.96, which is close for samples of 30 or more. Small samples need a slightly wider t interval.
Standard error of the mean
0.626783
- Mean
- 13.5
- Sample standard deviation
- 1.772811
- Count
- 8
- 95% interval, low
- 12.2715
- 95% interval, high
- 14.7285