Sem Calculator
SEM Calculator
Calculate the Standard Error of the Mean (SEM) from the sample standard deviation and sample size. The calculator also estimates confidence intervals for the population mean.
Enter the mean of your sample.
Enter the sample standard deviation.
Number of observations in the sample.
Used to calculate the confidence interval.
STANDARD ERROR OF THE MEAN
0.00
Mean units
Sample Mean
0.00
Standard Deviation
0.00
Sample Size
0
Lower CI
0.00
Upper CI
0.00
Confidence Level
95%
Formula:
SEM = SD / √n
Confidence Interval:
Mean ± Z × SEM
SEM = SD / √n
Confidence Interval:
Mean ± Z × SEM
SEM represents the estimated standard deviation of the
sampling distribution of the sample mean. For smaller
samples, a t-distribution may be more appropriate than
the Z-based confidence interval shown here.