Chapter Terminology
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Chapter Three Terms

Chapter Three Terminology
Event - Any collection of results or outcomes from a procedure.

Simple Event - An outcome or event that cannot be broken down into simpler components.

Sample Space - The set of all possible simple events from a procedure.

Law of Large Numbers - As a procedure is repeated again and again, the relative frequency probability will start to approach the actual probability.

Rare Event Rule for Inferential Statistics - If, under a given assumption, the probability of a given event event is extremely small (less than .05), we conclude that our original assumption is probably not correct.

Compound Event - Any event containing two or more simple events.

Mutually Exclusive - Two events are mutually exclusive if they cannot occur simultaneously. For example, rolling a single die and getting a 3 and a 5 cannot happen at the same time.

Complement of an Event - The complement of an event A, consists of all the outcomes in which event A does not occur.

Independence of Events - Two events, A and B are said to be independent if the occurrence of one does not affect the probability of the other. If the events are not independent, they are said to be dependent.

Permutation - Represents the total number of different sequences or orderings that are possible. Order is taken into account. Different orderings of the same items are counted separately.

Combinations - Represents the different orderings that are possible when order is NOT taken into account. Different orderings of the same items are not counted.