Mathématiques

Calculatrice d'Écart Type

Calculez la moyenne, la médiane, le mode, la variance et l'écart type

Comment Utiliser
  1. Enter your data values separated by commas, spaces, or new lines.
  2. Statistics update instantly as you type — no button press needed.
  3. Population Std Dev (σ) — use when your data is the entire population.
  4. Sample Std Dev (s) — use when your data is a sample from a larger population (divides by N−1).

Formule

Mean (μ) = Σx / N
Population Variance (σ²) = Σ(xᵢ − μ)² / N
Population Std Dev (σ) = √(σ²)
Sample Variance (s²) = Σ(xᵢ − x̄)² / (N−1)
Sample Std Dev (s) = √(s²)
Median Middle value of sorted data
Range Max − Min