Changeset 20600 in project


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10/03/10 03:00:54 (9 years ago)
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svnwiki
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Anonymous wiki edit for IP [86.129.208.150]:

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  • wiki/eggref/4/statistics

    r20599 r20600  
    77The library provides a number of formulae and methods taken from the book "Fundamentals of Biostatistics" by Bernard Rosner (5th edition).
    88
    9 === Binomial Distribution
    10 
    11 The [[http://en.wikipedia.org/wiki/Binomial_distribution|Binomial distribution]] is what you get from counting discrete events in a series of trials, each of which events has a probability p of producing a positive outcome.  An example would be tossing a coin {{n}} times: the probability of a head is {{p}}, and the distribution gives the expected number of heads in the {{n}} trials.
     9=== Statistical Distributions
     10
     11To use this library, you need to understand the underlying statistics.  In brief:
     12
     13The [[http://en.wikipedia.org/wiki/Binomial_distribution|Binomial distribution]] is used when counting discrete events in a series of trials, each of which events has a probability p of producing a positive outcome.  An example would be tossing a coin {{n}} times: the probability of a head is {{p}}, and the distribution gives the expected number of heads in the {{n}} trials.
     14
     15The [[http://en.wikipedia.org/wiki/Poisson_distribution|Poisson distribution]] is used to count discrete events which occur with a known average rate.  A typical example is the decay of radioactive elements.
     16
     17The [[http://en.wikipedia.org/wiki/Normal_distribution||Normal distribution]] is used for real-valued events which cluster around a specific mean with a symmetric variance.  A typical example would be the distribution of people's heights.
    1218
    1319== Provided Functions
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