Simple Probability

Front

What is probability?

Back

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Front

What is theoretical probability?

Back

Theoretical probability is the probability of an event calculated based on the possible outcomes in a perfect scenario.

Front

How do you calculate the probability of an event?

Back

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

Front

What is the probability of pulling a red marble from a bag containing 3 red, 2 blue, and 4 yellow marbles?

Back

1/3

Front

What is 10% of 80?

Back

8

Front

What is the probability of spinning green if there are 4 colors and only 1 is green?

Back

1/4

Front

In a box of 8 crayons, what is the probability of pulling out the black crayon if there is 1 black crayon?

Back

1/8

Front

What is 25% of 400?

Back

100

Front

What is the sum of probabilities of all possible outcomes?

Back

The sum of probabilities of all possible outcomes in a sample space is always 1.

Front

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

Back

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