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

Time series graphs show data over a time period. The time period is always shown on the x-axis. Data points are joined chronologically by line segments.

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

Misleading data

Maths

Thinking critically with maths

'Local shops see devastating drop in the number of pupils visiting them in 2023.' What reason explains why the graph may not support the headline?

What is the difference between the number of pupils in 2021 and 2022?

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

A scatter graph is a visual representation for {{}} data.

True - positive correlation means as one variable increases, so does the other.

False - there may be a third factor affecting both or coincidence.

If two things are correlated then one must cause the other.

Draw a 3D pie chart, at an angle, with the sector for that element at the front.

Draw a bar chart and leave numbers off the frequency axis.

Draw a 2D pie chart, at an angle, with the sector for that element at the front.

Draw a 3D bar chart with the bar for that element in the background.

In what ways could a chart be manipulated to make one element appear significantly bigger than it really is?

The average number of ice creams sold each year.

The number of ice creams sold each day for each year.

The average number of ice creams sold each day for each year.

What type of correlation (if any) is shown here?

As the amount of rain increases, the amount of sun also increases.

As the amount of rain decreases, the amount of sun also decreases.

As the amount of rain decreases, the amount of sun increases.

The more rain we have, the less sun we have.

Starter Quiz