###### Alissa Fong

MA, Stanford University
Teaching in the San Francisco Bay Area

Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts

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# Probability - Concept

Alissa Fong
###### Alissa Fong

MA, Stanford University
Teaching in the San Francisco Bay Area

Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts

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The probability of an event happening will always be a number less than 1 (often given as decimals, fractions, or percents.) It is calculated with the ratio of number of successful events out of number of possible outcomes. For, a die is numbered from 1-6, so there are 6 possible outcomes. The probability of rolling a 2 is 1/6, the probability of rolling a 5 is 1/6, the probability of rolling an even number is 3/6 = 1/2 , and the probability of rolling a number greater than 1 is 5/6.

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