Lecture10

Lecture10 - Lecture 10 Permutations Section 4.1 STAT 225...

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Permutations Section 4.1 1 STAT 225, Dallas Bateman, Spring 2010 Lecture 10

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Permutations 2 STAT 225, Dallas Bateman, Spring 2010
Permutations We use permutations when we are interested in the number of possible ways to order something and ORDER IS IMPORTANT! When order is not important, we call that a combination. We’ll cover those next time 3 STAT 225, Dallas Bateman, Spring 2010

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Permutation Example Suppose I have 8 different colors of gumballs. How many different ways can I give 3 children a gumball? 8 * 7 * 6 = 336 4 STAT 225, Dallas Bateman, Spring 2010
Permutation Example Does this look like we simply used the BCR ? BCR and Permutation are related. Let’s find out why using the permutation formula: ! 5 ! 8 )! 3 8 ( ! 8 3 8 P 1 2 3 4 5 1 2 3 4 5 6 7 8 336 6 7 8 5 STAT 225, Dallas Bateman, Spring 2010

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The outcome of a permutation depends on two things. Do we sample: With replacement? OR
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This note was uploaded on 02/06/2012 for the course STAT 225 taught by Professor Martin during the Spring '08 term at Purdue.

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Lecture10 - Lecture 10 Permutations Section 4.1 STAT 225...

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