In October 1957, BBC Radio 4's Today programme went on the air for the first time. A lot has changed in the last 60 years: we are living much longer; attitudes to sex and marriage have become more ...

Master Excel charts to transform data into compelling visuals. Learn advanced techniques for effective data visualization.

Draw the graph of \(x = 3\). Mark some points on a grid which have an \(x\)-coordinate of 3, such as (3, 0), (3, 1), (3, -2). The points lie on the vertical line \(x = 3\). If you recognise that ...

To draw a pie chart, we need to represent each part of the data as a proportion of 360, because there are \(360^{\circ}\) in a circle. For example, if 55 out of 270 vehicles are vans, we will ...

Adding a graph in a spreadsheet is no big deal as long as you know the process. However, do you know that you can make a curved line graph in Excel or Google Sheets? If not, you should check out ...