Probability+Mass+Function

Probability Mass Distribution (Distribution Theory) (GWU EMSE-271)
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A **PMF** "shows" the values for a **discrete** random variable.
 * Notation:
 * Altohugh Van Dorp is using pmf; usually caps (PMF).
 * X=x statistics way of indicicating the more formal. X(w) = x functional relationship.

Line graphs for PMFs are still sought; but not frequently observed. Historgrams are (better|nicer) because as more data is sample the histogram takes on the shape of underlying distribution.

(For more read pmf and pdf EMSE 280)


 * Sources:**
 * EMSE 271, Fall 2009 (Slides 33- 34)
 * EMSE 280, Spring 2009
 * Probability mass function. (2008, December 23). In //Wikipedia, The Free Encyclopedia//. Retrieved 17:49, May 2, 2009, from []