If you understand the definition of a mathematical function, a good way to judge it is that any line drawn parallel to the y-axis intersects with the values in the function’s curve only once. The same ...

If you’re looking to improve your skills in creating Excel charts and transform how you visually represent data, this guide by Simon Sez IT is an excellent resource. It covers everything from reliable ...

The classic horizontal bar chart is something we’re all familiar with. For many of us, it was the first ‘chart’ we learnt in school, usually alongside Venn diagrams and line graphs. That’s because bar ...