Find probabilities from frequency trees

Maths

Probability 2 (Sample space, Venn diagrams and experimental)

Here is some information regarding a sign language course taken by some students in year 10 and year 11. A student is randomly selected. What is the probability that they are in year 11?

Here is some information regarding a sign language course taken by some students in year 10 and year 11. A student is randomly selected. What is the probability that they passed the course?

The total number of students who failed the test

Here is some information regarding a sign language course taken by some students in year 10 and year 11. A student is randomly selected. What probability scenario is represented by the fraction 50 out of 150?

Some children were asked if they owned a cat or a dog. A child is chosen at random. Calculate the probability that a child who owns a cat is chosen.

Some children were asked if they owned a cat or a dog. A child is chosen at random. Calculate the probability that a child who owns a dog or a cat is chosen.

This Venn diagram shows the number of students who study art, history and geography. Calculate P (Art ∩ Geography)

This Venn diagram shows the number of students who study art, history and geography. Calculate P(not history).

This lesson will soon be taken down.

Find probabilities from frequency trees

Lesson outcome