uS
 is the collection or set of all possible outcomes of an experiment.  It is the universal set for this
 experiment.  
 –Discrete
 Sample Space:  Finite or countably infinite
 set.  (e.g. faces of a die, the
 positive integers, students in this class)
 –Continuous
 Sample Space: not countable.  (e.g. the real line,
 battery voltage in a car)