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  2. Beta distribution - Wikipedia

    en.wikipedia.org/wiki/Beta_distribution

    A practical application of this occurs for example for random walks, since the probability for the time of the last visit to the origin in a random walk is distributed as the arcsine distribution Beta(1/2, 1/2): [5] [12] the mean of a number of realizations of a random walk is a much more robust estimator than the median (which is an ...

  3. Lottery mathematics - Wikipedia

    en.wikipedia.org/wiki/Lottery_mathematics

    One must divide the number of combinations producing the given result by the total number of possible combinations ... 0.0000180208 55,491.33 5 + 1

  4. Coin problem - Wikipedia

    en.wikipedia.org/wiki/Coin_problem

    There is an explicit formula for the Frobenius number when ... 5, 1, 1: A possible set of combinations of boxes for a total of 0 to 59 nuggets. ... all scores other ...

  5. Beta function - Wikipedia

    en.wikipedia.org/wiki/Beta_function

    The regularized incomplete beta function is the cumulative distribution function of the beta distribution, and is related to the cumulative distribution function (;,) of a random variable X following a binomial distribution with probability of single success p and number of Bernoulli trials n:

  6. Dirichlet beta function - Wikipedia

    en.wikipedia.org/wiki/Dirichlet_beta_function

    For every odd positive integer +, the following equation holds: [3] (+) = ()!() +where is the n-th Euler Number.This yields: =,() =,() =,() =For the values of the Dirichlet beta function at even positive integers no elementary closed form is known, and no method has yet been found for determining the arithmetic nature of even beta values (similarly to the Riemann zeta function at odd integers ...

  7. Combinatorial number system - Wikipedia

    en.wikipedia.org/wiki/Combinatorial_number_system

    Continuing similarly to search for a 3-combination at position 16 − 15 = 1 one finds c 3 = 3, which uses up the final unit; this establishes = + + (), and the remaining values c i will be the maximal ones with () =, namely c i = i − 1. Thus we have found the 5-combination {8, 6, 3, 1, 0}.

  8. Beta-binomial distribution - Wikipedia

    en.wikipedia.org/wiki/Beta-binomial_distribution

    The beta-binomial distribution is the binomial distribution in which the probability of success at each of n trials is not fixed but randomly drawn from a beta distribution. It is frequently used in Bayesian statistics , empirical Bayes methods and classical statistics to capture overdispersion in binomial type distributed data.

  9. Langford pairing - Wikipedia

    en.wikipedia.org/wiki/Langford_pairing

    0, 0, 1, 1, 0, 0, 26, 150, 0, 0, 17792, 108144, 0, 0, 39809640, 326721800, 0, 0, 256814891280, 2636337861200, 0, 0, … (sequence A014552 in the OEIS ). As Knuth (2008) describes, the problem of listing all Langford pairings for a given n can be solved as an instance of the exact cover problem , but for large n the number of solutions can be ...