Making Predictions Using 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.

Front

What is a number cube?

Back

A number cube, also known as a die, is a six-sided object with numbers 1 through 6 on its faces.

Front

If a number cube is rolled, what is the probability of rolling a 7?

Back

0, because a standard number cube only has numbers 1 to 6.

Front

How do you calculate the expected number of times an event occurs?

Back

Multiply the total number of trials by the probability of the event.

Front

What is the expected number of times a number cube will land on 4 if rolled 30 times?

Back

5 times, since the probability of rolling a 4 is 1/6.

Front

What is the probability of rolling a 1 or 2 on a number cube?

Back

1/3, since there are 2 favorable outcomes (1 and 2) out of 6 possible outcomes.

Front

If a spinner has 6 equal sections, what is the probability of landing on any one section?

Back

1/6, since there is one favorable outcome out of 6 possible outcomes.

Front

What is the expected number of times a spinner will land on 1 or 2 if spun 60 times?

Back

20 times, since the probability of landing on 1 or 2 is 1/3.

Front

What does it mean to make a prediction using probability?

Back

It means to estimate the likelihood of an event occurring based on known probabilities.

Front

What is the formula for expected value in probability?

Back

Expected Value = Total Trials x Probability of the Event.