probability simple events

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 will not happen and 1 means it will definitely happen.

Front

What is a simple event in probability?

Back

A simple event is an event that consists of a single outcome. For example, rolling a 3 on a die.

Front

How do you calculate the probability of a simple event?

Back

The probability of a simple event is calculated by dividing the number of favorable outcomes by the total number of possible outcomes.

Front

What is the probability of rolling a number less than 3 on a standard die?

Back

1/3 (The favorable outcomes are 1 and 2, which are 2 outcomes out of 6 total outcomes).

Front

If a spinner has 8 equal sections numbered 1 to 8, what is the probability of landing on a number less than 6?

Back

5/8 (The favorable outcomes are 1, 2, 3, 4, and 5, which are 5 outcomes out of 8 total outcomes).

Front

What is the probability of selecting a boy from a group of 15 boys and 15 girls?

Back

1/2 (There are 15 boys out of a total of 30 students).

Front

What is experimental probability?

Back

Experimental probability is the probability based on the actual results of an experiment, calculated as the number of times an event occurs divided by the total number of trials.

Front

If you pull a marble from a bag containing 8 green marbles and 17 other marbles, what is the probability of pulling a green marble?

Back

8/25 (There are 8 favorable outcomes out of 25 total marbles).

Front

What does it mean if the probability of an event is 0?

Back

It means that the event cannot happen at all.

Front

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

Back

It means that the event will definitely happen.