Data points to x/y axis category labels?

[pc45]

Let's say I have some data points on an x/y axis, both between 0-100. Instead of showing 0-100 on the x/y axis, is there a way to apply custom labels to the x/y axis, such as Low/Medium/High.... where low would represent 0-33, medium 34-66, and high 67+? I've tried several ways but I can't seem to ever get a chart to render. Any help would be appreciated. Thank you!