"Presenters are usually guilty of including too much data in their on-screen charts," says Garr Reynolds, author of Presentation Zen. It's not that charts are bad in a PowerPoint presentation, but ...

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 this ...

Data is rarely so uniform and predictable that plotting data points creates a perfectly linear arrangement. Scatter charts might have wildly varying plots that create a seemingly random correlation ...