Probability MME

Front

What is probability?

Back

Probability is a measure of how likely an event is to occur, expressed as a number between 0 (impossible) and 1 (certain).

Front

What is a sample space?

Back

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

Front

How do you calculate the probability of an event?

Back

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

Front

What is the probability of rolling an even number on a standard die?

Back

There are 3 even numbers (2, 4, 6) on a die, so the probability is 3/6 or 1/2.

Front

What is the probability of flipping heads on a fair coin?

Back

The probability of flipping heads is 1/2.

Front

If you have a standard deck of cards, how many hearts are there?

Back

There are 13 hearts in a standard deck of 52 cards.

Front

What is the probability of drawing a red card from a standard deck?

Back

There are 26 red cards (hearts and diamonds), so the probability is 26/52 or 1/2.

Front

What does 'OR' mean in probability?

Back

'OR' means to consider the probability of either event happening, which can be calculated by adding their individual probabilities.

Front

What is the probability of rolling a 3 or a 5 on a die?

Back

There are 2 favorable outcomes (3 and 5), so the probability is 2/6 or 1/3.

Front

How many outcomes are there when flipping a coin and rolling a die?

Back

There are 2 outcomes for the coin (heads or tails) and 6 for the die, so 2 x 6 = 12 outcomes.