Benford's Law

Benford's law, also called the First-Digit Law, is a phenomenological law about the frequency distribution of leading digits in many (but not all) real-life sets of numerical data. That law states that in many naturally occurring collections of numbers the small digits occur disproportionately often as leading significant digits.[1] For example, in sets which obey the law the number 1 would appear as the most significant digit about 30% of the time, while larger digits would occur in that position less frequently: 9 would appear less than 5% of the time. If all digits were distributed uniformly, they would each occur about 11.1% of the time.[2] Benford's law also concerns the expected distribution for digits beyond the first, which approach a uniform distribution. --- https://en.wikipedia.org/wiki/Benford's_law

 

Simon Mullen

 
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