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What is probability?

Back

Probability is the chance or the likelihood of an event happening, represented as a number between zero and one.

Tags

CCSS.7.SP.C.5

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What is theoretical probability?

Back

Theoretical probability is the probability of an event occurring based on all possible outcomes, assuming ideal conditions.

Tags

CCSS.7.SP.C.7A

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What is experimental probability?

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Experimental probability is the probability of an event occurring based on the results of an actual experiment or trial.

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How is theoretical probability calculated?

Back

Theoretical probability is calculated as the number of favorable outcomes divided by the total number of possible outcomes.

Tags

CCSS.7.SP.C.7A

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How is experimental probability calculated?

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Experimental probability is calculated as the number of times an event occurs divided by the total number of trials conducted.

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What is the relationship between theoretical and experimental probability?

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Theoretical probability is what should happen, while experimental probability is what actually happens in practice.

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What happens to experimental probability as the number of trials increases?

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As more trials are completed, the experimental probability generally draws closer to the theoretical probability.

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If a die is rolled 12 times and a 4 is rolled 2 times, what is the experimental probability of rolling a 4?

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The experimental probability of rolling a 4 is 2/12 or 1/6.

Tags

CCSS.7.SP.C.6

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What is the range of probability values?

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Probability values range from 0 (impossible event) to 1 (certain event).

Tags

CCSS.7.SP.C.5

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What does a probability of 0.5 indicate?

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A probability of 0.5 indicates that an event is equally likely to occur or not occur.

Tags

CCSS.7.SP.C.5