Theoretical Probability

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What is Theoretical Probability?

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Theoretical Probability is the likelihood of an event happening based on all possible outcomes, calculated as the number of favorable outcomes divided by the total number of possible outcomes.

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CCSS.7.SP.C.7A

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How do you calculate the probability of an event?

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

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CCSS.7.SP.C.7A

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What is the probability of spinning a red if there are 1 red and 4 other colors?

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1/5

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CCSS.7.SP.C.7B

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What is the probability of spinning an even number on a spinner divided into 10 equal sections with 5 even numbers?

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50%.

Tags

CCSS.7.SP.C.7A

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What is the Theoretical Probability of rolling a 4 on a fair die?

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1/6.

Tags

CCSS.7.SP.C.7A

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If you roll a die, what is the probability of rolling a number greater than 2?

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3/5.

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CCSS.7.SP.C.7B

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What is the probability of not landing on red if there are 1 red and 4 other colors?

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66.7%.

Tags

CCSS.7.SP.C.7B

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What is an example of a favorable outcome?

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In a die roll, rolling a 3 is a favorable outcome if you are looking for the probability of rolling a 3.

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What does it mean if an event has a probability of 0?

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It means the event is impossible and will not occur.

Tags

CCSS.7.SP.C.5

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What does it mean if an event has a probability of 1?

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It means the event is certain to occur.

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CCSS.7.SP.C.5