📊 Standard Deviation & Variance Calculator

📘 Definitions & Formulas

Mean (μ): The average of all data points.

Variance (σ²): The average of squared differences from the Mean.

Standard Deviation (σ): The square root of the Variance.

Formulas:

• Mean: μ = (Σx) / n
• Variance: σ² = Σ(x - μ)² / n
• Standard Deviation: σ = √σ²