Probability+Distribution

Probability Distribution (Distribution Theory) (GWU EMSE-271)
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End points of intervals don't have vaules unlike PMFs, areas under curve is value: Pr (a <= X <= b) = Integral of f(x)dx from a to b. Area under the curve.

Area under the curve, -infinity to infinity has to be 1. [Probabilities have to be between 0 and 1).

CDF = F(x) = Pr(X=x) = intergral of f(u)du from -infinity to infinity. "u" is a dummy variable.

QUARTILE FUNCTION: Easier to see with CDF.



(For more, if you have read, read pmf and pdf EMSE 280)


 * Sources:**
 * EMSE 271, Fall 2009 (Slides 37- 40)
 * EMSE 280, Spring 2009*