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Homework Help: Difference between a PDF and a CDF?

  1. Apr 23, 2009 #1
    I'm having a lot of trouble figuring out the difference between a probability density function and a cumulative distribution function.

    Is the CDF just the integral of the PDF?

    Thanks in advance.
     
  2. jcsd
  3. Apr 23, 2009 #2

    HallsofIvy

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    The PDF (probability density function) is the derivative of the CDF (cumulative distribution function). Conversely, the CDF is the integral of the PDF.
     
  4. Apr 23, 2009 #3
    Alright that's what I thought. Much appreciated! I was freaking out haha.
     
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