Standard Deviation Calculator
Paste numbers separated by commas, spaces, or new lines (we ignore other text). Choose Population or Sample SD.
Count (n)
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Mean (μ/ȳ)
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Sum (Σx)
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Range (max−min)
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Variance (pop)
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Std dev (pop)
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Variance (sample)
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Std dev (sample)
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Median (Q2)
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Q1 / Q3
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IQR
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Mode(s)
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Min
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Max
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CV%
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Parsed
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Deviations Table
| # | xi | xi − mean | (xi − mean)² |
|---|---|---|---|
| Σ | — | ≈ 0 | — |
Quartiles use the inclusive method (like Excel’s QUARTILE.INC / PERCENTILE.INC).