Standard Deviation Calculator
Statistics Results
Mean (Average)
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Population SD (σ)
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Sample SD (s)
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Population Variance (σ²)
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Sample Variance (s²)
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Sum
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Count (n)
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About Standard Deviation
Standard deviation is a measure of variance or dispersion of a set of values.
- Low SD: Data points are close to the mean/average.
- High SD: Data points are spread out over a wider range.