Statistics Definitions
- Mean: Sum of all values ÷ count. The arithmetic average.
- Median: The middle value when sorted. Less sensitive to outliers than mean.
- Mode: The most frequently occurring value(s). A dataset can have multiple modes.
- Range: Max − Min. Measures spread of data.
- Standard Deviation (σ): Average distance from the mean. Low σ = data clustered near mean.
- Variance (σ²): Standard deviation squared.