Type or paste your numbers separated by commas or spaces. You can enter as many numbers as you need.
Click Calculate to compute all statistics instantly: mean, variance, standard deviation (both population and sample), median, min, max, and range.
Review the calculated statistics. Population standard deviation (σ) uses N, while sample standard deviation (s) uses N-1 for unbiased estimation.
Q: What is the difference between population and sample standard deviation?
A: Population standard deviation (σ) divides by N when you have data for the entire population. Sample standard deviation (s) divides by N-1 when working with a sample to provide an unbiased estimate of the population parameter.
Q: What does standard deviation tell you?
A: Standard deviation measures how spread out your data is from the mean. A low standard deviation means data points are close to the mean; a high value means they're widely spread.
Q: How many numbers can I enter?
A: You can enter as many numbers as you need. The calculator handles large datasets efficiently with client-side computation.