Sample Standard Deviation Calculator
Calculate sample standard deviation using the n−1 correction. Enter your values below to calculate instantly, then use the explanation and example to understand the result.
Enter your values
What this Sample Standard Deviation Calculator does
Calculate sample standard deviation using the n−1 correction. It is designed to give a quick answer while still showing enough context to understand what the number means and what assumptions can affect it.
How to use the calculator
- Enter each value using the unit shown beside the field.
- Select คำนวณ to update the result.
- Read the result together with the unit, assumptions and interpretation on this page.
- Change one input at a time when comparing scenarios so you can see what actually drives the answer.
How the calculation works
Calculate sample standard deviation using the n−1 correction. The calculator applies the relationship defined for this tool to the values you enter and formats the result for readability.
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With the example inputs Numbers = 10, 12, 14, 16, 18, the calculator returns approximately 3.16228.
How to interpret the result
Statistical results depend on the data set and on whether you are describing a population or a sample. Clean the input list first and confirm which convention the problem requires.
A single summary statistic can hide distribution shape and outliers, so review the underlying values when the decision matters.
Accuracy, inputs and rounding
The arithmetic is deterministic: the same valid inputs produce the same answer. A realistic result still depends on the quality of the values you enter. XpressCalculator keeps units next to inputs and rounds displayed results for readability. When precision matters, keep more source precision and avoid rounding intermediate values.
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What does the Sample Standard Deviation Calculator calculate?
Calculate sample standard deviation using the n−1 correction.
Why can another calculator show a different answer?
Different calculators may use different formulas, defaults, rounding rules, unit conventions or assumptions. Match the inputs and method before comparing results.
Can I use decimal values?
Yes, where the input field accepts numbers. Use the precision supported by your source data rather than adding unnecessary decimal places.
Does XpressCalculator save the values I enter?
The calculation logic on this page runs in your browser. Standard site analytics or advertising services may still process technical usage data as described in the Privacy Policy.
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Editorial review: Formula, units, interface and explanatory content reviewed for consistency on September 4, 2026. See our วิธีการคำนวณ and Accuracy Policy.