Basic probability

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What is probability?

Back

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Tags

CCSS.7.SP.C.5

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What is the formula for calculating probability?

Back

The probability of an event is calculated as: P(Event) = (Number of favorable outcomes) / (Total number of possible outcomes).

Tags

CCSS.7.SP.C.7A

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

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A probability of 0 means that 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?

Back

A probability of 1 means that the event is certain to occur.

Tags

CCSS.7.SP.C.5

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How do you calculate the probability of not getting a specific outcome?

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P(not A) = 1 - P(A), where P(A) is the probability of the event A occurring.

Tags

CCSS.7.SP.C.5

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If a spinner has 5 equal sections, what is the probability of landing on one specific section?

Back

The probability of landing on one specific section is 1/5.

Tags

CCSS.7.SP.C.7A

Front

What is the probability of rolling a number less than 4 on a standard six-sided die?

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The probability is 3/6 or 1/2, since the numbers less than 4 are 1, 2, and 3.

Tags

CCSS.7.SP.C.7B

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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.

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What is the difference between independent and dependent events?

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Independent events do not affect each other's outcomes, while dependent events do.

Tags

CCSS.HSS.CP.A.5

Front

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

Back

The probability of getting heads is 1/2.

Tags

CCSS.7.SP.C.7A