The mean average is a single number expressing the typical value in a set of data. It is calculated by finding the total of the set of data and dividing by how many values there are.

A set of data is a collection of facts, such as numbers, words, measurements, observations or even just descriptions of things.

Explain how to calcluate the mean of a set of data including a value of zero

Maths

Explain the relationship between the mean and sharing equally

Explain how the mean changes when the total quantity or number of values changes

Explain how to use the mean to make comparisons between two sets of data

Explain why the mean is useful and when it is not appropriate

In this unit pupils will learn how to calculate the mean of a set of data and use the mean to make comparisons between two sets of information. In the future unit pupils will calculate and compare the mean, median and mode of a set of data.

In the prior unit pupils interpreted and constructed pie charts and line graphs and used these to solve problems. They read scales and made links to fractions, angles, percentages and understanding proportional relationships. In this unit pupils will learn how to calculate the mean of a set of data and use the mean to make comparisons between two sets of information.

In this unit pupils will learn how to calculate the mean of a set of data and use the mean to make comparisons between two sets of information where appropriate.

Mean average

Use the table to calculate Jacob’s mean average number of pages read. The mean average is {{ }}

Laura says: ‘Complete the table by working out how many pages I read on Friday.’ What is the missing value?

Calculate the mean average of the number of pages Jacob reads over four days. The mean average is {{ }}

Calculate the mean average of the number of pages Sofia reads over ten days. The mean average is {{ }}

Look at the table. How many pages does Alex read on average?

Lucas and Laura are looking at the amount read by Sam. Lucas says Sam had read a mean average of 10 pages per day. Laura says Sam has read a mean average of 13.3 pages per day. Who is correct?

The mean average is calculated by finding the total of the set of data and {{ }} by how many values there are.

Here are the scores from Pine class’ spelling test:    10     9     3     10     What is the mean average score? 


Explain how to calcluate the mean of a set of data including a value of zero

Lesson outcome