This is an question I've dealt frequently in my days as the Director of MBA Admission. Candidates with non-quantitative backgrounds are well-rounded and are a wonderful contribution to the MBA classroom.
Yet, there is a need for these candidates to demonstrate their quantitative abilities to assure the admissions committee of their ability to be academically successful in an MBA program.
My recommendation is for a faculty-led, graded course that provides an official transcript. I've heard good things recently about the UCLA online extension program. Many MBA programs will accept the MBAMath.com program. It is, however, a self-paced (not faculty-led) program.
Bottom line: Before investing time and money, check with the schools to which you are applying to see if they have a preferred "prescription" or if what you are pursuing will be acceptable to them.
While these courses provide evidence of quantitative ability, they are also an excellent review of the quantitative components of an MBA program. Therefore, I suggest candidates take Accounting, Statistics and Finance.
I hope this is helpful. If I can help further, please contact me.
Wendy
