What does negative binomial distribution mean?

Definitions for negative binomial distribution
neg·a·tive bi·no·mi·al dis·tri·bu·tion

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Wikipedia

  1. Negative binomial distribution

    In probability theory and statistics, the negative binomial distribution is a discrete probability distribution that models the number of failures in a sequence of independent and identically distributed Bernoulli trials before a specified (non-random) number of successes (denoted r) occurs. For example, we can define rolling a 6 on a die as a success, and rolling any other number as a failure, and ask how many failed rolls will occur before we see the third success (r = 3). In such a case, the probability distribution of the number of non-6s that appear will be a negative binomial distribution. The Pascal distribution (after Blaise Pascal) and Polya distribution (for George Pólya) are special cases of the negative binomial distribution. A convention among engineers, climatologists, and others is to use "negative binomial" or "Pascal" for the case of an integer-valued stopping-time parameter r, and use "Polya" for the real-valued case. For occurrences of associated discrete events, like tornado outbreaks, the Polya distributions can be used to give more accurate models than the Poisson distribution by allowing the mean and variance to be different, unlike the Poisson. The negative binomial distribution has a variance μ ( 1 + μ / r ) {\displaystyle \mu (1+\mu /r)} , with the distribution becoming identical to Poisson in the limit r → ∞ {\displaystyle r\to \infty } for a given mean μ {\displaystyle \mu } . This can make the distribution a useful overdispersed alternative to the Poisson distribution, for example for a robust modification of Poisson regression. In epidemiology it has been used to model disease transmission for infectious diseases where the likely number of onward infections may vary considerably from individual to individual and from setting to setting. More generally it may be appropriate where events have positively correlated occurrences causing a larger variance than if the occurrences were independent, due to a positive covariance term. The term "negative binomial" is likely due to the fact that a certain binomial coefficient that appears in the formula for the probability mass function of the distribution can be written more simply with negative numbers .

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Numerology

  1. Chaldean Numerology

    The numerical value of negative binomial distribution in Chaldean Numerology is: 4

  2. Pythagorean Numerology

    The numerical value of negative binomial distribution in Pythagorean Numerology is: 3

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"negative binomial distribution." Definitions.net. STANDS4 LLC, 2024. Web. 1 May 2024. <https://www.definitions.net/definition/negative+binomial+distribution>.

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