Basic Theoretical Probability

Front

What is theoretical probability?

Back

Theoretical probability is the likelihood of an event happening based on all possible outcomes, calculated as the number of favorable outcomes divided by the total number of outcomes.

Front

How do you calculate the probability of an event?

Back

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

Front

What is the theoretical probability of pulling a red marble from a bag with 4 green, 3 red, 2 blue, and 1 yellow marble?

Back

3/10

Front

What is the probability of spinning an even number on a spinner with numbers 1 to 6?

Back

50% (3 even numbers: 2, 4, 6 out of 6 total numbers).

Front

If an event is absolutely impossible, what is its probability?

Back

0%.

Front

If an event is absolutely certain, what is its probability?

Back

100%.

Front

What is the probability of an event that has no chance of occurring?

Back

0%.

Front

What is the probability of an event that is guaranteed to happen?

Back

100%.

Front

What is the probability of spinning a 7 on a spinner that has numbers 1 to 4?

Back

1/4.

Front

What does it mean if the probability of an event is 1/2?

Back

It means there is an equal chance of the event occurring or not occurring.