Experimental probability

key notes:

The experimental probability is the number of times an event occurs out of the total number of trials.

Learn with an example

📢 Tanner surveyed 15 students at his school about their favourite colours. Of the students surveyed, 5 said green was their favourite colour.

What is the experimental probability that the next student Tanner talks to will pick green?

Simplify your answer and write it as a fraction or whole number.

P(green) =_______

Write the experimental probability as a fraction in simplest form.

P(green) = green / total

= 5/15

= 1/3

So, P(green) = 1/3

📢 Seth is watching a baseball game. So far, 2 out of 10 batters have gotten a hit.

What is the experimental probability that the next batter will get a hit?

Simplify your answer and write it as a fraction or whole number.

P(hit) =_______

Write the experimental probability as a fraction in simplest form.

P(hit) = hits / total

= 2/10

= 1/5

So, P(hit) = 1/5

📢 Aaliyah runs a stable that boards 15 horses, and 5 of them are palomino.

What is the experimental probability that the next horse that comes to board will be palomino?

Simplify your answer and write it as a fraction or whole number.

P(palomino) =________

Write the experimental probability as a fraction in simplest form.

P(palomino) = palomino / total

= 5/15

= 1/3

So, P(palomino) = 1/3

let’s practice!