ESS210B
Prof. Jin-Yi Yu
Probability Density Function
qP = the probability that a randomly
selected value of a variable X falls between a and b.
f(x) = the probability density
function.
qThe probability function has to be integrated over distinct limits to obtain a probability.
qThe probability for X to have a particular value is ZERO.
qTwo important properties of the probability density function:
(1) f(x) ¾ 0 for all x within the domain of f.
(2)
