Page "Random sequence" Paragraph 1

The concept of a random sequence is essential in probability theory and statistics.

The concept generally relies on the notion of a sequence of random variables and many statistical discussions begin with the words " let X < sub > 1 </ sub >,..., X < sub > n </ sub > be independent random variables ...".

Yet as D. H. Lehmer stated in 1951: " A random sequence is a vague notion ... in which each term is unpredictable to the uninitiated and whose digits pass a certain number of tests traditional with statisticians ".