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Probability density function

  1. Dec 31, 2012 #1
    If probability distribution function is flat like a rectangular signal then probability density function which is differentiation of probability distribution function will have positive and negative impulses, but probability density function cannot be negative. . whats wrong in this . . . Can't probability distribution functio be flat ?
  2. jcsd
  3. Jan 1, 2013 #2


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    Sometimes, "probability distribution function" is used as "probability density function".
  4. Jan 3, 2013 #3
    The differentiated function is not a probability.
  5. Jan 3, 2013 #4


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    neither is the rectangular function a distribution function. a distribution function must be an increasing function (so that the derivative, which is the p.d.f., is always non-negative).
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