Median Calculator: run median calculations online. Formula, assumptions, and interpretation guide.
Mean (x̄) = Σx / n — sum of all values divided by count
Variance (s²) = Σ(x − x̄)² / (n − 1) — average squared deviation (sample)
Standard deviation (s) = √variance — typical spread around the mean
IQR = Q3 − Q1 — range of the middle 50% of data
Outlier bounds: values below Q1 − 1.5×IQR or above Q3 + 1.5×IQR are flagged as outliers (Tukey method)