# Find probabilities from a histogram

In this lesson, we will learn how to find probabilities from a histogram by finding the frequencies represented by each bar and the vertical scale.

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!

Q1.What is the total frequency?

1/3

Q2.Which class interval contains the median?

2/3

Q3.What is the estimate median?

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!

Q1.What is the total frequency?

1/3

Q2.Which class interval contains the median?

2/3

Q3.What is the estimate median?

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:

# Find probabilities from a histogram

Find probabilities from a histogram by finding the frequencies represented by each bar and the vertical scale.

Q1.What is the probability a plant chosen at random is less than 10 cm?

1/3

Q2.What is the probability a plant chosen at random is more than 20 cm?

2/3

Q3.What is an estimate for the probability that a randomly selected plant is over 30 cm tall?

3/3

Quiz:

# Find probabilities from a histogram

Find probabilities from a histogram by finding the frequencies represented by each bar and the vertical scale.

Q1.What is the probability a plant chosen at random is less than 10 cm?

1/3

Q2.What is the probability a plant chosen at random is more than 20 cm?

2/3

Q3.What is an estimate for the probability that a randomly selected plant is over 30 cm tall?

3/3

# Lesson summary: Find probabilities from a histogram

## 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