Introduction to Probability

Front

What is probability?

Back

Probability is a measure of how likely an event is to occur, expressed as a number between 0 (impossible) and 1 (certain).

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CCSS.7.SP.C.5

Front

What is the probability of pulling an orange marble from a bag containing 4 red, 2 green, 2 blue, and 2 yellow marbles?

Back

0/10 or 0 (There are no orange marbles in the bag).

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CCSS.7.SP.C.5

Front

If an event has a probability between 0.5 and 1, how is it classified?

Back

It is classified as likely.

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CCSS.7.SP.C.5

Front

What does a probability of 100% indicate about an event?

Back

It indicates that the event is certain to happen.

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CCSS.7.SP.C.5

Front

What percent is equivalent to a probability of 3/10?

Back

30%.

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CCSS.7.SP.C.5

Front

What is the probability of an event that is impossible?

Back

0 (or 0%).

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CCSS.7.SP.C.5

Front

What is the probability of an event that is certain?

Back

1 (or 100%).

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CCSS.7.SP.C.5

Front

If an event has a probability of 0.75, how is it classified?

Back

It is classified as likely.

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CCSS.7.SP.C.5

Front

What is the range of probabilities for an event that is unlikely?

Back

Between 0 and 0.5.

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CCSS.7.SP.C.5

Front

How do you convert a fraction to a percentage?

Back

Multiply the fraction by 100.