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 flipping a coin and getting heads?

Back

1/2

Front

What does P(not A) represent in probability?

Back

P(not A) represents the probability that event A does not occur.

Front

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

Back

P(not A) = 1 - P(A) = 1 - 1/4 = 3/4.

Front

How do you calculate the probability of an event?

Back

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

Front

A bag contains 5 quarters, 2 dimes, and 4 pennies. What is the probability of picking a quarter?

Back

5/11

Front

What is the probability of spinning green if there are 4 sections: red, blue, green, and yellow?

Back

1/4

Front

What is the probability of rolling a 7 on a single die?

Back

0 (a single die has numbers 1-6, so 7 cannot be rolled).

Front

What is a sample space in probability?

Back

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

Front

What is an event in probability?

Back

An event is a specific outcome or a set of outcomes from a probability experiment.