Std Deviation Calculator. Use this calculator to easily calculate the standard deviation of a sample or to estimate the population standard deviation based on a random sample from it. A common estimator for σ is the sample standard deviation typically denoted by s.
It is the measure of the spread of numbers in a data set from its mean value and can be represented using the sigma symbol σ. Click calculate to find standard deviation variance count of data points n mean and sum of squares. The sample standard deviation calculates the standard deviation from a population s subset.
Enter your numbers below the answer is calculated live.
It is worth noting that there exist many different equations for calculating sample standard deviation since unlike sample mean sample standard deviation does not have any single estimator that is unbiased efficient and has a maximum likelihood. Click calculate to find standard deviation variance count of data points n mean and sum of squares. The standard deviation calculator will also ouput the variance arithmetic mean average range count and standard error of the mean sem. When your data is the whole population the formula is.
