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Standard Deviation
Calculate standard deviation and variance
How It Works
Standard deviation is a measure of the dispersion of a set of data from its mean. It is calculated as the square root of the variance. A low standard deviation indicates that values tend to be close to the mean, while a high standard deviation indicates that values are spread out.
Standard deviation is a measure of the dispersion of a set of data from its mean. It is calculated as the square root of the variance. Standard deviation is widely used in experimental and industrial settings to test models against real-world data. A low standard deviation indicates that the data points tend to be close to the mean, while a high standard deviation indicates that the data points are spread out over a wider range.
The population standard deviation (σ) is used when the data represents the entire population. The sample standard deviation (s) is used when the data is a sample of a larger population, using n−1 in the denominator (Bessel's correction) to correct for bias.
Results
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