Probability/Tree Diagram Flashcard

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 tree diagram?

Back

A tree diagram is a visual representation that shows all possible outcomes of an event, branching out from a starting point.

Front

How do you calculate the probability of an event?

Back

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

Front

What is the probability of rolling a die and getting a number less than 4?

Back

The probability is 1/2, since the favorable outcomes are 1, 2, and 3.

Front

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

Back

The probability is 1/2, since there are 5 favorable outcomes out of 10 total.

Front

What is the total number of outcomes when flipping a coin and rolling a die?

Back

There are 12 total outcomes (2 outcomes from the coin x 6 outcomes from the die).

Front

What is the probability of rolling a die and getting an even number?

Back

The probability is 1/2, since the even numbers are 2, 4, and 6.

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.

Front

If you have a standard deck of cards, what is the probability of drawing a heart?

Back

The probability is 1/4, since there are 13 hearts in a deck of 52 cards.