Simple Probability, 7.6E

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 occur and 1 means it will certainly occur.

Front

What is a simple event in probability?

Back

A simple event is an event that consists of a single outcome. For example, rolling a 3 on a die is a simple event.

Front

What is the formula for calculating probability?

Back

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

Front

What is a sample space?

Back

A sample space is the set of all possible outcomes of a probability experiment. For example, the sample space for rolling a die is {1, 2, 3, 4, 5, 6}.

Front

What is an event in probability?

Back

An event is a specific outcome or a set of outcomes from a probability experiment. For example, getting an even number when rolling a die is an event.

Front

What does it mean if an event is certain?

Back

An event is certain if it has a probability of 1, meaning it will definitely happen.

Front

What does it mean if an event is impossible?

Back

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

Front

How do you express probability as a fraction?

Back

Probability can be expressed as a fraction by taking the number of favorable outcomes and dividing it by the total number of possible outcomes. For example, the probability of rolling a 2 on a die is 1/6.

Front

What is the probability of flipping a coin and getting heads?

Back

The probability of flipping a coin and getting heads is 1/2, since there are two possible outcomes: heads or tails.

Front

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

Back

The probability of rolling a 4 on a standard six-sided die is 1/6, as there is one favorable outcome (rolling a 4) out of six possible outcomes.