AtlasCalc🧮 MathbeginnerOffline
Statistics
Mean, median, mode, range, variance, and standard deviation of a list.
Inputs
Enter your values below.
Result
Your answer appears here.
Enter values and press Calculate — the result appears here.
How it works
The formula behind this calculator.
mean = Σx/n; median = middle value; std = √(Σ(x − mean)² / n)
- x₁ … xₙ
- The dataset
Mean is the arithmetic average. Median is the middle value. Standard deviation measures spread — how far values typically deviate from the mean.
Example: For [2, 4, 4, 4, 5, 5, 7, 9]: mean = 5, median = 4.5, std ≈ 2.14
Ref: Any introductory statistics text
Tips
- 💡 Mean is sensitive to outliers. Use the median for skewed data.
- 💡 Standard deviation assumes your data is roughly bell-curve shaped.