Statistics Calculator
Compute count, sum, mean, median, mode, range, variance and standard deviation of a dataset.
Input Data
如 1, 2, 3, 4, 5。
Results
8
40
5
4.5
4
7
4
2
4.5714
2.1381
n = 8 values analyzed
At a glance:Descriptive statistics summarize a dataset with a few metrics: central tendency (mean, median, mode) and dispersion (range, variance, standard deviation). Population variance divides by n; sample variance divides by n−1 (Bessel's correction).
Formula
Mean = Σx / n.
Sample variance s² = Σ(x−x̄)² / (n−1).
Sample SD = √s².
How to Use
- Enter comma/space separated values.
- Read the statistics.
FAQ
Population vs sample variance?
Sample variance divides by n−1 (unbiased); population by n; sample SD is usually larger.
Multiple modes?
If several values tie for the highest frequency, all are listed.
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References
Content review: Calculatorism Science Team. Results are for reference only.