# Results for: “Mathematics”

23 eBooks

## Variation: COOP-HSPT Algebra |
Ace Academics | Ace Academics | ePub | ||||

## Percents: Praxis I Arithmetic |
Ace Academics | Ace Academics | ePub | ||||

## qtc18-1 |
N.P.Bali; P.N.Gupta; Dr C.P.Gandhi | Laxmi Publications | |||||

18 Poisson Distribution 18.1. INTRODUCTION The Poisson distribution is also a discrete probability distribution. This was discovered by French mathematician Simon Denis Poisson (1781�1840) in the year 1837. This distribution deals with the evaluation of probabilities of rare events such as ��number of car accidents on road��, ��number of earthquakes in a year�, ��number of misprints in a book�� etc. 18.2. CONDITIONS FOR APPLICABILITY OF POISSON DISTRIBUTION The Poisson distribution is derived as a limiting case of the binomial distribution. So, the conditions for the applicability of the Poisson distribution are same as those for the applicability of Binomial distribution. Here the additional requirement is that the probability of �success� is quite near to zero. 18.3. POISSON VARIABLE A random variable which counts the number of successes in a random experiment with trials satisfying above conditions is called a Poisson variable. If the probability of an article being defective is 1/500 and the event of getting a defective article is success and samples of 10 articles are checked for defective articles, then the possible values of Poisson variable are 0, 1, 2, ......, 10. See All Chapters |
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## Equations with Several Variables: GED Algebra |
Ace Academics | Ace Academics | ePub | ||||

## Square Roots and Powers: Praxis I Arithmetic |
Ace Academics | Ace Academics | ePub | ||||