Standard Error Calculator
Calculate the Standard Error of the Mean (SEM) from standard deviation and sample size.
Used to display confidence intervals
Notice that as you increase the sample size (n), the Standard Error decreases. More data = precise mean estimate.
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Standard Error (SEM)
0
Precision of the mean estimate
Estimated 95% Confidence Interval
0 — 0
Mean ± 1.96 × SEM
Standard Deviation
15
Sample Size
100
Documentation
Formulas
Standard Error
95% CI
Frequently Asked Questions
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