Statistics Calculator
Get mean, median, mode, range, and standard deviation.
Statistics Calculator
Enter your values and calculate
How This Calculator Works
Standard deviation measures how spread out the data is around the mean. A low value means data clusters near the average; a high value means it's widely dispersed. This uses the sample (n−1) formula.
Formula
σ = √[ Σ(x − mean)² / (n−1) ]
Example
For 4, 8, 15, 16, 23, 42: mean ≈ 18, standard deviation ≈ 13.6.
Practical Use Cases
- Research data
- Quality control
- Financial volatility