basic probability

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What is probability?

Back

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

Tags

CCSS.7.SP.C.5

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What is an event in probability?

Back

An event is a specific outcome or a set of outcomes from a probability experiment.

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What does it mean if an event is impossible?

Back

An impossible event has a probability of 0, meaning it cannot happen.

Tags

CCSS.7.SP.C.5

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What does it mean if an event is certain?

Back

A certain event has a probability of 1, meaning it will definitely happen.

Tags

CCSS.7.SP.C.5

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How do you calculate the probability of a single event?

Back

Probability = (Number of favorable outcomes) / (Total number of possible outcomes).

Tags

CCSS.7.SP.C.7A

Front

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

Back

The probability is 3/6 or 1/2, since there are three odd numbers (1, 3, 5).

Tags

CCSS.7.SP.C.7B

Front

What is the probability of drawing a red card from a standard deck of cards?

Back

The probability is 26/52 or 1/2, since there are 26 red cards (hearts and diamonds).

Tags

CCSS.7.SP.C.7B

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What is the probability of picking a blue marble from a jar with 2 pink, 6 red, and 4 blue marbles?

Back

The probability is 4/12 or 1/3.

Tags

CCSS.7.SP.C.7B

Front

What does 'equally likely' mean in probability?

Back

Equally likely means that all outcomes have the same chance of occurring.

Tags

CCSS.7.SP.C.7A

Front

What is a sample space in probability?

Back

A sample space is the set of all possible outcomes of a probability experiment.