Notes from class, October 13, 2009.
Below is the probablitiy density function of
    the Poisson distribution with mean 17 (in blue) and the
    data gathered in class (in red). Each red dot represents
  one  sample containing as many red rice grains as its x-coordinate indicates.

Below is the cumulative probability function F
of the Poisson distribution with mean 17 (in
  blue) and
  the "cumulative data function" G of the data we gathered in class.
  (The cumulative probability function F(x) is the probability that
  X is less than or equal to x, where X is a Poisson random variable
  with mean 17. The cumulative data function G(x) is the relative
  frequency of the data points with value less than or equal to x.)
  
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