What is the “typical” salary? How spread out are salaries? Are there outliers? Drag data points on a number line and watch key statistics update instantly.
20 employees — drag any dot left or right to change its salary
Σx / nSum divided by count. Sensitive to outliers: one extreme salary pulls it far.
middle valueThe middle value when sorted. Robust to outliers: great for skewed data.
most frequentMost frequently occurring value. Useful for categorical or repeated values.
max − minSimplest spread measure. Heavily affected by a single outlier at either extreme.
Σ(x − μ)² / nAverage squared distance from the mean, treating these 20 values as the whole population. For a sample you would divide by n − 1 (Bessel's correction) and write s².
√(σ²)Square root of variance. Same units as data. Hover to see distances on chart.
Q3 − Q1Middle 50% range. Q1=$37.3k, Q3=$61.3k. Robust to outliers.