Experimental and Theoretical Probability

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What is experimental probability?

Back

Experimental probability is the probability of an event based on the results of an experiment or trial. It is calculated by dividing the number of times an event occurs by the total number of trials.

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What is theoretical probability?

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Theoretical probability is the probability of an event based on the possible outcomes in a perfect world. It is calculated by dividing the number of favorable outcomes by the total number of possible outcomes.

Tags

CCSS.7.SP.C.7A

Front

How do you calculate the theoretical probability of landing on black if a spinner has 4 equal sections: red, blue, green, and black?

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The theoretical probability of landing on black is 1/4 or 25%.

Tags

CCSS.7.SP.C.7A

Front

What is the theoretical probability of NOT landing on yellow if a spinner has 8 equal sections: 1 yellow and 7 others?

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The theoretical probability of NOT landing on yellow is 7/8.

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CCSS.7.SP.C.7B

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If a cup contains numbers 1 to 20, what is the theoretical probability of picking an even number?

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The theoretical probability of picking an even number is 1/2.

Tags

CCSS.7.SP.C.7B

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What is the formula for calculating experimental probability?

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Experimental Probability = (Number of times the event occurs) / (Total number of trials)

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If you roll a die 6 times and get the number 1 once, what is the experimental probability of rolling a 1?

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The experimental probability of rolling a 1 is 1/6.

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CCSS.7.SP.C.6

Front

What is the probability of rolling an odd number on a 6-sided die?

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The probability of rolling an odd number is 3/6 or 1/2.

Tags

CCSS.7.SP.C.7B

Front

What is the probability of rolling an even number on a 6-sided die?

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The probability of rolling an even number is also 3/6 or 1/2.

Tags

CCSS.7.SP.C.7A

Front

If you flip a coin, what is the theoretical probability of getting heads?

Back

The theoretical probability of getting heads is 1/2.

Tags

CCSS.7.SP.C.7A