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
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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
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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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