Theoreticallyspeaking

I paid $99 for magoosh and it has been amazing. I also use Khan academy to brush up/ relearn certain material.

I plan on applying to some Sociology PhD programs in the next 2-3 years but I have questions about my math preparation. I stopped my math progression after college algebra. However, I currently work on staff at a university and I have tuition remission as one of my benefits. I want to bolster my application by taking some additional math courses but I am not sure what I should take. I assume I should take some Calc but how many courses should I take? Should I take some stats classes? I have a BA and a MS in Sociology.