The radar chart allows you to plot values based on a center point and outwards to categories you specify. Each corner in the chart is a category that makes it look like a spider web. The data series has to be somewhat in the same numerical range or the chart will be hard to read.
This chart is known as a spider, web, star, cobweb, kiviat or polar chart and is often used to graph multivariate observations in statistics, where each corner shows a single observation.
It is hard to compare values despite the gridlines, however, it is easy to spot a data point that is far out from the others.
How to build
Select the data.
Go to tab "Insert" on the ribbon.
Click the "Insert waterfall, funnel, stock, surface radar chart" button.