Introduction to Probability

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What is the theoretical probability of an event?

Back

The theoretical probability of an event is the ratio of the number of favorable outcomes to the total number of possible outcomes.

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CCSS.7.SP.C.7A

Front

How do you calculate the probability of an event occurring?

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Probability = (Number of favorable outcomes) / (Total number of possible outcomes)

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CCSS.7.SP.C.7A

Front

What is the probability of spinning a number less than 3 on a spinner divided into 4 equal sections?

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1/4

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CCSS.7.SP.C.7A

Front

How do you determine the probability of drawing a specific color marble from a bag?

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Probability = (Number of specific color marbles) / (Total number of marbles in the bag)

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CCSS.7.SP.C.7B

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What is the probability of drawing a blue marble from a bag containing 5 blue, 3 red, and 2 green marbles?

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1/2

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CCSS.7.SP.C.7B

Front

What is the probability of spinning a 2 on a spinner with 8 equal sections?

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1/8

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CCSS.7.SP.C.7A

Front

If an event is absolutely certain, what is its probability expressed as a percentage?

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100%

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CCSS.7.SP.C.5

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If an event is absolutely impossible, what is its probability expressed as a percentage?

Back

0%

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CCSS.7.SP.C.5

Front

What is the difference between theoretical probability and experimental probability?

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Theoretical probability is based on expected outcomes, while experimental probability is based on actual outcomes from experiments.

Front

What is a sample space in probability?

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A sample space is the set of all possible outcomes of a probability experiment.