Calculadora de Varianza Gratis
Calcula la varianza de un conjunto de datos. La varianza mide qué tan dispersos están los valores.
Variance Pop
2.666667
Variance Sample4.000000
Desv Est1.632993
Media6.0000
Fórmula
## How to Calculate Variance ### Formula (Population Variance) **σ² = Σ(xᵢ - μ)² / N** ### Steps 1. Find the mean (μ) 2. Subtract the mean from each value 3. Square each difference 4. Find the average of the squared differences Variance is the square of the standard deviation.
Ejemplo Resuelto
Find the variance of 4, 8, and 6.
- 01Mean = (4 + 8 + 6) / 3 = 6
- 02Squared differences: (4-6)² = 4, (8-6)² = 4, (6-6)² = 0
- 03Variance (population) = (4 + 4 + 0) / 3 = 2.6667
- 04Variance (sample) = (4 + 4 + 0) / 2 = 4
Preguntas Frecuentes
What is variance?
Variance measures how far a set of numbers is spread out from their average value. It is the average of the squared differences from the mean.
Why do we square the differences?
Squaring removes negative signs (so deviations above and below the mean don't cancel out) and gives more weight to larger deviations.
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