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Probability density function

by reddvoid
Tags: density, function, probability
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reddvoid
#1
Dec31-12, 10:45 PM
P: 99
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 ?
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mfb
#2
Jan1-13, 08:30 AM
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P: 11,925
Sometimes, "probability distribution function" is used as "probability density function".
Enthalpy
#3
Jan3-13, 01:05 PM
P: 661
The differentiated function is not a probability.

rbj
#4
Jan3-13, 01:54 PM
P: 2,251
Probability density function

Quote Quote by Enthalpy View Post
The differentiated function is not a probability.

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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