Probability Flashcard

Front

What is probability?

Back

Probability is a measure of how likely an event is to occur, expressed as a number between 0 and 1, where 0 means the event will not happen and 1 means it will definitely happen.

Front

What is the formula for calculating the probability of an event?

Back

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

Front

What does it mean if the probability of an event is 1/2?

Back

It means that there is an equal chance of the event occurring or not occurring.

Front

What is the probability of landing on blue if a spinner has 3 blue sections out of 12 total sections?

Back

The probability is 3/12 or 1/4.

Front

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

Back

P(not Event) = 1 - P(Event). For example, if P(purple) = 1/5, then P(not purple) = 1 - 1/5 = 4/5.

Front

What is the probability of landing on green twice in a row if the probability of landing on green once is 1/6?

Back

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 in a standard deck.

Front

If a spinner has 5 red sections out of 12 total sections, what is the probability of landing on red?

Back

The probability is 5/12.

Front

What is the complement of an event in probability?

Back

The complement of an event is the event that the original event does not occur. It is calculated as 1 minus the probability of the event.

Front

What is a sample space in probability?

Back

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