Average vs Weighted Average

Enter values and click Calculate.

Mean (Arithmetic Average):
Mean = (x₁ + x₂ + ... + xₙ) / n

Weighted Mean:
Weighted Mean = (Σ (xᵢ × wᵢ)) / (Σ wᵢ)
where xᵢ are values, wᵢ are weights (like group sizes).

Median:
Middle value when data is ordered.
If even count: Median = (x₍ₙ/2₎ + x₍ₙ/2 + 1₎) / 2

Mode:
The value that appears most often in the dataset.

Mean (Arithmetic Average): Best for evenly distributed, normal data, no outliers.
Weighted Mean: Use when values have different importance or frequency.
Median (Middle Value): Best for skewed data or outliers (e.g., income levels).
Mode (Most Frequent Value): Useful for categorical or most common occurrence (e.g., favorite color).