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This review explores fundamental concepts of probability, including the definition of probability as the chance of an event occurring, represented by a number ranging from 0 to 1. It discusses probability experiments and possible outcomes, along with how to express probability in three ways: as a fraction, a ratio, or in words. Examples, such as determining the probability of selecting a marble from a bag of colored marbles, provide practical applications. Key vocabulary such as "certain," "impossible," "likely," and "unlikely" is also defined and illustrated.
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Probability January 7, 2014
Review • What does a fraction show? • 5/8 as a decimal • .45 as a fraction • 1.256 + 5.565
Vocabulary • Probability- The chance that an event will happen. It can be described as a number from 0 to 1. • Probability experiment- An experiment to determine the chance that an event will happen. • Outcome- possible result
How to write probability • 3 ways probability can be written • Fraction • Ratio • In words
Using a spinner • List the outcomes
Word problems • One marble is chosen at random. What is the probability of choosing a green, Write certain, impossible, likely, unlikely, or equally likely. • Bag contains: 4 yellow, 2 red, 2 blue, 1 green
