basic probability

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 is certain to happen?

Back

1 (or 100%)

Front

What is the probability of an event that is impossible?

Back

0 (or 0%)

Front

If a spinner has 4 equal sections (red, blue, green, yellow), what is the probability of landing on green?

Back

1/4

Front

What does P(A) represent?

Back

P(A) represents the probability of event A occurring.

Front

What does P(not A) represent?

Back

P(not A) represents the probability of event A not occurring.

Front

If P(A) = 1/4, what is P(not A)?

Back

3/4

Front

What is the total probability of all possible outcomes?

Back

1 (or 100%)

Front

In a fair six-sided die, what is the probability of rolling an odd number?

Back

1/2

Front

What is the formula for calculating probability?

Back

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