Frank Benford

Frank Benford, an American physicist and statistician, is best known for Benford's Law, which states that in many naturally occurring datasets, the leading digit is more likely to be a small number. Specifically, about 30% of the numbers in such sets will have "1" as the first digit, while smaller percentages will appear as the leading digits subsequently, decreasing all the way down to about 4.6% for "9".