Sunday, December 13, 2009

Benford's Law or First Digit Law

In lists of numbers from many (but not all) real-life sources of data, the leading digit is distributed in a specific, non-uniform way. According to this law, the first digit is 1 almost one third of the time, and larger digits occur as the leading digit with lower and lower frequency, to the point where 9 as a first digit occurs less than one time in twenty.

Think of electricity bills, street addresses, stock prices, population numbers, death rates, lengths of rivers, physical and mathematical constants, and processes described by power laws.

1 comment:

roopesh mangal said...

1029 looks more familiar to us than 971 reason for this can be given by we think 1029 as (1000+29) but why dont we think 971 as (1000-29)???
that proves that human mind is made for joining the thing rather breaking the thing ,, thats y "+" and "*" looks more familiar to us than "-" and "/"!!!!ur comment pls