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Probability paper

  1. Nov 14, 2008 #1
    Jus some confusion over plotting points on normal probability paper..

    1. Order the data
    2. Do we do (i-0.5)/n where i=no. of observation and n= no. of samples?
    believe can't use Z(i)= (X(i)- Mean)/ stand. dev. as i need to find both mean and std. dev from the graph...
    What is the graph plotted for...i mean i have X(i) Vs Z(i) but seem a bit in circles.

    can anybody please let me know?thanks
     
  2. jcsd
  3. Nov 14, 2008 #2

    HallsofIvy

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    Staff Emeritus
    Science Advisor

    Okay, that should be easy.

    Do that for WHAT? I have no idea what you are taking about here.

     
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