Understanding Theoretical and Experimental Probability

What is the theoretical probability of getting heads when flipping a coin?

• 1/3

• 1/4

• 2/3

• 1/2

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CCSS.7.SP.C.5

Which wheel has a uniform probability, A or B?

• Wheel A

• Wheel B

• Both

• Neither

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CCSS.7.SP.C.5

CCSS.7.SP.C.7

After spinning a wheel, what was the experimental probability of landing on red?

• 1/2

• 3/5

• 2/5

• 1/3

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CCSS.7.SP.C.5

What is the experimental probability of spinning green after additional spins?

• 10/25

• 11/26

• 9/24

• 8/21

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CCSS.7.SP.C.5

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CCSS.7.SP.C.7

Why might the experimental probability differ from the theoretical probability?

• Insufficient trials

• Incorrect calculations

• Faulty equipment

• All of the above

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What is the theoretical probability of rolling a sum of 9 with two number cubes?

• 1/8

• 2/9

• 2/8

• 1/9

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CCSS.7.SP.C.5

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What is a possible reason for the discrepancy between experimental and theoretical probabilities?

• Lack of randomness

• Too many trials

• Perfect experimental conditions

• Not enough trials

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CCSS.7.SP.C.7

How many comedy DVDs should be bought if 5,000 DVDs are expected to be sold?

• 1450

• 1500

• 1550

• 1600

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If three coins are tossed, what is the theoretical probability of all landing on heads?

• 1/6

• 1/7

• 1/8

• 1/9

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CCSS.7.SP.C.5

CCSS.7.SP.C.7

In the DVD sales example, what proportion of last year's sales were drama DVDs?

• 300/2000

• 580/2000

• 670/2000

• 450/2000

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