Galton–Watson process - Wikipedia, the free encyclopedia
june 2011 by rtlechow
"There was concern amongst the Victorians that aristocratic surnames were becoming extinct. Galton originally posed the question regarding the probability of such an event in the Educational Times of 1873, and the Reverend Henry William Watson replied with a solution. Together, they then wrote an 1874 paper entitled On the probability of extinction of families. Galton and Watson appear to have derived their process independently of the earlier work by I. J. Bienaymé; see Heyde and Seneta 1977. For a detailed history see Kendall (1966 and 1975)."
statistics
math
june 2011 by rtlechow
Statistics Module for Ruby
april 2010 by rtlechow
"From time to time I find it useful to do some simple number crunching in Ruby. Here are some of my utility functions.
Warning: This script is provided as is with no warranty implied or otherwise. Users must determine whether it is fit for any particular purpose, as we, the authors, make no claim to that end. Use it at your own risk."
ruby
statistics
math
Warning: This script is provided as is with no warranty implied or otherwise. Users must determine whether it is fit for any particular purpose, as we, the authors, make no claim to that end. Use it at your own risk."
april 2010 by rtlechow
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