Simple Probability & Likelihood

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 does it mean if an event is 'certain'?

Back

An event is 'certain' if it will definitely happen, with a probability of 1.

Front

What does it mean if an event is 'impossible'?

Back

An event is 'impossible' if it cannot happen at all, with a probability of 0.

Front

How do you calculate the probability of an event?

Back

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

Front

If a jar has 4 blue marbles and 23 red marbles, what is the probability of picking a red marble?

Back

Probability of red marble = 23/27, which is likely.

Front

What is the likelihood of spinning a color that is not present on a spinner?

Back

The likelihood is impossible, with a probability of 0.

Front

If the probability of an event is 1/4, what does that mean?

Back

It means that there is a 25% chance that the event will occur.

Front

What is experimental probability?

Back

Experimental probability is the probability determined by conducting an experiment and recording the outcomes.

Front

What is theoretical probability?

Back

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

Front

If Andrew has a probability of 1/5 for pulling out a black sock, what is the probability of pulling out a white sock?

Back

The probability of pulling out a white sock is likely, as it is the remaining probability.