Probability 7th Grade

Front

What is theoretical probability?

Back

Theoretical probability is the probability that is based on expected results, calculated using the formula: P(Event) = Number of favorable outcomes / Total number of outcomes.

Front

What is the probability of flipping a coin and getting heads?

Back

1/2

Front

A bag has 3 red marbles, 2 blue, and 4 yellow. What is the probability of pulling a red marble?

Back

1/3

Front

What is the probability of spinning red if the spinner has only red sections?

Back

1

Front

Find the probability of rolling a 7 on a single die.

Back

0

Front

What is experimental probability?

Back

Experimental probability is the probability based on the actual results of an experiment, calculated as: P(Event) = Number of times the event occurs / Total number of trials.

Front

If a die is rolled, what is the probability of rolling an even number?

Back

3/6 or 1/2 (the even numbers are 2, 4, and 6).

Front

What is the probability of drawing a heart from a standard deck of cards?

Back

1/4 (there are 13 hearts in a deck of 52 cards).

Front

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

Back

It means the event is impossible and will not occur.

Front

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

Back

It means the event is certain and will definitely occur.