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 Everyday Examples
 Sample Space:  The set of all possible outcomes from an experiment.
A sample space lists all possible outcomes of an experiment. In this example, a family has three children. How many of the children are male? How many are female? A sample space, illustrated in this tree diagram, lists all possible outcomes for the gender of all three children. One possibility is that all three children could be female.

A tree diagram illustrates the gender possibilities for a family with 3 children.