The number of times an event occurs; or the number of individuals (people, animals etc.) with some specific property.

Checking understanding of pictograms and bar charts

Maths

In this unit, pupils explore different graphs and charts as a way of presenting data visually. Pupils are introduced to scatter graphs and learn how to construct them in this unit. In the future unit, this understanding is extended to using a line of best fit to allow interpolation

In this unit, pupils interpreted and constructed pie charts based on their understanding of fractions and proportion

In this unit pupils will interpret and construct a range of representations of data including bar charts, pie charts and scatter graphs.

Graphical representations of data

The frequency is the number of times an event occurs; or the number of individuals (people, animals etc.) with some specific property.

A pictogram (pictograph) is a graph consisting of pictures to visually represent the frequency of objects or groups

Securing constructing pictograms

A bar chart (bar graph) is a graph consisting of bars visually representing the frequency of objects or groups.

Securing constructing bar charts by hand

Constructing bar charts by utilising technology

A sector is the region formed between two radii and their connecting arc.

Constructing pie charts

Clockwise is the direction that the hands of an analogue clock travel

A pie chart (pie graph) is a circular graph where sectors represent different groups proportionally.

An angle is a measure of turn, it is often displayed as the rotation between two line segments.

Constructing pie charts by utilising technology

Proportion is a part to whole (sometimes part to part) comparison. If two things are proportional, the ratio of part to whole is maintained

Degrees are the most common unit of measurement for angle. One whole turn is equal to 360 degrees, written 360°.

Interpreting pie charts

A visual representation for bivariate data. It can be useful when determining the nature of the relationship between the two variables.

An independent (explanatory) variable is a measure that is predicted to have an effect on another variable

A dependent (response) variable is a measure whose value is predicted to be affected by an explanatory variable

Bivariate data has two variables, where each data point for one variable has a corresponding data point for the other variable.

Constructing scatter graphs

A visual representation for bivariate data. It can be useful when determining the nature of the relationship between the two variables

Constructing scatter graphs by utilising technology

Interpolation is the process of estimating unknown values that are inside the range of existing data.

Extrapolation is the process of estimating unknown values that are outside the range of existing data.

Interpreting scatter graphs

A scatter graph is a visual representation for bivariate data. It can help determine the nature of the relationship between the variables.

Graphical representations of data

Choose a lesson (11)

These lessons will be removed by end of Summer Term 2025.