Data Management

Unit 3

Tree Diagram

method of illustrating results to determine outcomes

Ordered Counting

uses the number of options to determine number of outcomes

Product Rule

number of outcomes for consecutive events

Total outcomes formula

m x n x o…

Box Method

uses squares to represent each event

Sum Rule

Compound events, when one event will occur out of the options

Factorials

multiplication of consecutive numbers decreasing from n

Two Factorial Special Cases

1! = 1 & 0! = 1

Permutations

multiplication of a consecutive whole number decreasing from n to r

Permutations Formula

nPr = n! / (n-r)!

Permutations with Identical Items Formula

n! / a! b! c!…

Permutations with Identical Items

indistinguishable items from one another reduces the number of possible outcomes