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Graph analysis - how closely histogram fits poisson curve

  1. Feb 17, 2010 #1
    1. The problem statement, all variables and given/known data


    Its about random radioactive decay. I have a histogram showing the number of counts recorded in 3 second intervals and I've drawn the Poisson Curve on the same graph.

    I have a graph for 50 intervals and one for 100 intervals and I need to analyse how well the data agrees with Poisson Distribution....and see if the 100 interval graph is any better than the 50 intervals.


    2. Relevant equations

    n/a

    3. The attempt at a solution

    I was thinking I should add up the differences between each bar on the histogram and the curve...subtracting the ones under the curve and adding the ones above. I'm sure this has a name in statistics and I need to know what it is - that's basically my question.

    What is the name of this graph analysis/statistics thing that I'm using? Or should I be doing something else???


    I posted this in Physics first but I think it might be better in here...I just wanna know what to look up in order to find out how to analyse my graphs!..
     
  2. jcsd
  3. Feb 19, 2010 #2
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