# Draw a tree diagram for independent events

A lesson to draw tree diagrams and complete missing probabilities in tree diagrams for independent events.

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

## Question 3

Q1.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?

1/3

Q2.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?

2/3

Q3.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?

3/3

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

## Question 3

Q1.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?

1/3

Q2.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?

2/3

Q3.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?

3/3

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close Video"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

Quiz:

# Draw a tree diagram for independent events

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

## Question 3

Q1.Here is the first branch of a probability tree diagram.

1/3

Q2.Here is the first branch of a different probability tree diagram. What should the missing probability be?

2/3

Q3.This tree diagram shows Amir taking red and blue counters from a jar. He replaces the counter after he has picked one up.

3/3

Quiz:

# Draw a tree diagram for independent events

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

## Question 3

Q1.Here is the first branch of a probability tree diagram.

1/3

Q2.Here is the first branch of a different probability tree diagram. What should the missing probability be?

2/3

Q3.This tree diagram shows Amir taking red and blue counters from a jar. He replaces the counter after he has picked one up.

3/3

# Lesson summary: Draw a tree diagram for independent events

### Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Jog

On the spot:
Chair yoga

### Take part in The Big Ask.

The Children's Commissioner for England wants to know what matters to young people.