Simple Probability review

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.

Front

What is the probability of an event that cannot happen?

Back

0

Front

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

Back

1

Front

If a spinner has 4 equal sections, what is the probability of landing on any one section?

Back

1/4

Front

How do you calculate the probability of an event?

Back

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

Front

If you roll a fair six-sided die, what is the probability of rolling a number greater than 4?

Back

1/3 (only 5 and 6 are greater than 4).

Front

What is the probability of rolling a 6 on a fair six-sided die?

Back

1/6

Front

If you spin a spinner that is divided into 10 equal parts, how many times would you expect to land on a specific part if you spin it 100 times?

Back

10 times (1/10 of 100).

Front

What is a sample space in probability?

Back

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

Front

If 150 people were polled and 30 said soccer is their favorite sport, what is the probability that a randomly selected person prefers soccer?

Back

1/5 or 0.2 (30 out of 150).