The solution to the problem described below is:
Go to Modeling, Modify, Transformation tools, Scale Tool (Option Box) and deselect Discrete Scale.
I've searched the new user forums for about an hour now and haven't found a solution that deals with this.
For some reason, ever since yesterday I am unable to resize a geometry using the resize tool. I can move the geometry around the workspace or revolve it in any way, but to resize it I have to manually input the numbers.
I have tried two solutions that I found on this forum, (deleting the prefs folder in the maya directory, as well as toggling the lock/unlock icon) Neither seems to have an impact on the issue.
Thanks for your help.