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Are the Digits of π an Independent and Identically Distributed Sequence?
The American Statistician
Vol. 54, No. 1 (Feb., 2000), pp. 12-16
Stable URL: http://www.jstor.org/stable/2685604
Page Count: 5
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This article searches for dependence in the decimal expansion of the number π. We systematically test whether the digits of π are k-distributed for greater and greater k. As it happens, testing whether longer and longer sequences are randomly distributed is a surprisingly interesting problem. We look at a number of approaches to testing independence and find no significant departures from uniform iid behavior in sequences up to 16 digits in length.
The American Statistician © 2000 American Statistical Association