STATS Review Unit 5- Lessons 1-4

Front

What is the probability of an event?

Back

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

Front

Can a probability be greater than 1?

Back

No, a probability cannot be greater than 1. It must be between 0 (impossible event) and 1 (certain event).

Front

What is the sum of probabilities of all possible outcomes in a sample space?

Back

The sum of probabilities of all possible outcomes in a sample space is always equal to 1.

Front

How do you express a probability as a fraction?

Back

To express a probability as a fraction, divide the number of favorable outcomes by the total number of possible outcomes.

Front

What is an example of a probability expressed as a fraction?

Back

If there are 3 favorable outcomes out of 10 possible outcomes, the probability is expressed as 3/10.

Front

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

Back

If an event has a probability of 0, it means that the event is impossible and will not occur.

Front

What does it mean if an event has a probability of 1?

Back

If an event has a probability of 1, it means that the event is certain to occur.

Front

Can probabilities be expressed as decimals?

Back

Yes, probabilities can be expressed as decimals, where 0 represents impossible and 1 represents certain.

Front

What is the probability of rolling a 3 on a standard six-sided die?

Back

The probability is 1/6, since there is one favorable outcome (rolling a 3) out of six possible outcomes.

Front

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

Back

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