Probability - Theoretical Review 1

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 formula for calculating probability?

Back

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

Front

If you have 2 red, 4 blue, and 5 yellow marbles, how many total marbles do you have?

Back

Total marbles = 2 + 4 + 5 = 11.

Front

What is the probability of picking a red marble from a bag with 2 red, 4 blue, and 5 yellow marbles?

Back

Probability of red marble = 2/11.

Front

What is the probability of picking a blue marble from a bag with 2 red, 4 blue, and 5 yellow marbles?

Back

Probability of blue marble = 4/11.

Front

If you roll a die, how many possible outcomes are there?

Back

There are 6 possible outcomes when rolling a die.

Front

If you roll a die twice, how many total outcomes are there?

Back

Total outcomes = 6 (first roll) x 6 (second roll) = 36.

Front

What is the probability of picking a yellow marble from a bag with 4 red, 6 blue, and 2 yellow marbles?

Back

Probability of yellow marble = 2/12 = 1/6.

Front

What is the probability of picking a blue marble from a bag with 4 red, 6 blue, and 2 yellow marbles?

Back

Probability of blue marble = 6/12 = 1/2.

Front

What does it mean if an event has a probability of 0?

Back

An event with a probability of 0 means it is impossible to occur.