Simple Probability and Sample Spaces

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, or as a percentage.

Front

What is a sample space?

Back

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

Front

How can probability be expressed?

Back

Probability can be expressed as a fraction, a decimal, or a percent.

Front

What is the probability of an event that is certain to happen?

Back

The probability of an event that is certain to happen is 1 or 100%.

Front

What is the probability of an event that cannot happen?

Back

The probability of an event that cannot happen is 0.

Front

If a bag contains 3 red marbles and 2 blue marbles, what is the probability of picking a blue marble?

Back

The probability of picking a blue marble is 2/5.

Front

What is the theoretical probability of flipping a coin and landing on heads?

Back

The theoretical probability of landing on heads is 1/2.

Front

In a spinner divided into 4 equal sections numbered 1 to 4, what is the probability of landing on an even number?

Back

The probability of landing on an even number is 2/4 or 1/2.

Front

If a die is rolled, what is the probability of rolling a number greater than 4?

Back

The probability of rolling a number greater than 4 is 1/3.

Front

What is the formula for calculating probability?

Back

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