Learn the difference between the standard error of the mean and the standard deviation and how each is used in statistics and finance.

The equation for the standard error of the mean is the sample standard deviation divided by the square root of the sample size.

Francisco Cribari-Neto, Maria da Gloria A. Lima, New heteroskedasticity-robust standard errors for the linear regression model, Brazilian Journal of Probability and Statistics, Vol. 28, No. 1 ...

Bradley Efron, Nonparametric Standard Errors and Confidence Intervals, The Canadian Journal of Statistics / La Revue Canadienne de Statistique, Vol. 9, No. 2 (1981), pp. 139-158 ...