Power law
Exponential
Mean: —
Variance: —
Pareto 80/20: —
Tail P(X>10): —
Scale-free: P(kx)/P(x) = k^(-α)
Zipf's law: α≈1 (word freq)
Wealth: α≈1.5-2.5
City sizes: α≈2 (Zipf)
Zipf's law: α≈1 (word freq)
Wealth: α≈1.5-2.5
City sizes: α≈2 (Zipf)