7.14

Define and develop a probability model, including models that may or may not be uniform, where uniform models assign equal probability to all outcomes and non-uniform models involve events that are not equally likely.

7.14.aCollect and use data to predict probabilities of events.7.14.bCompare probabilities from a model to observed frequencies, explaining possible sources of discrepancy.
Example Problems
A bag contains 9 blue candies, 7 red candies and 5 green candies.
A candy is chosen from the bag at random.

Find the probability that the candy is: Not Orange
A letter is selected at random from the word F I B O N A C C I.

Find the probability that the letter is: Not A
Write your answer as a fraction or as a decimal rounded to the nearest hundredth.
A bag contains 9 blue candies, 7 red candies and 5 green candies.
A candy is chosen from the bag at random.

Find the probability that the candy is: Yellow
Khan Academy Resources
Simple probabilityProbability modelsMaking predictions with probabilityExperimental probabilityIntro to theoretical probabilitySimple probability: yellow marbleSimple probability: non-blue marbleIntuitive sense of probabilitiesProbability models example: frozen yogurtMaking predictions with probability Experimental probability
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