Probability

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, where 0 means the event cannot happen and 1 means the event is certain.

Front

What is the formula for calculating probability?

Back

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

Front

What is the difference between theoretical and experimental probability?

Back

Theoretical probability is based on the possible outcomes in a perfect world, while experimental probability is based on actual experiments and observations.

Front

If a bag contains 5 red marbles and 3 blue marbles, what is the probability of picking a red marble?

Back

P(red) = 5/(5+3) = 5/8.

Front

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

Back

It means that the event is impossible and will not occur.

Front

What does it mean if an event has a probability of 1?

Back

It means that the event is certain to occur.

Front

In a spinner divided into 8 equal parts, what is the probability of landing on one specific part?

Back

P(specific part) = 1/8.

Front

If you roll a fair six-sided die, what is the probability of rolling a number greater than 4?

Back

P(number > 4) = 2/6 = 1/3.

Front

What is a sample space in probability?

Back

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

Front

If a coin is flipped, what is the probability of getting heads?

Back

P(heads) = 1/2.