Page 33 - Probability Demystified

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CHAPTER

Sample Spaces

Introduction

In order to compute classical probabilities, you need to find the sample
space for a probability experiment. In the previous chapter, sample spaces
were found by using common sense. In this chapter two specific devices
will be used to find sample spaces for probability experiments. They are tree
diagrams and tables.

Tree Diagrams

A tree diagram consists of branches corresponding to the outcomes of two or
more probability experiments that are done in sequence.
In order to construct a tree diagram, use branches corresponding to the
outcomes of the first experiment. These branches will emanate from a single

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