One of the most common reasons to use the term quantitative skills is when discussing the MBA testing process. For those who wish to get into business school, taking the GMAT test is critical. One component of this is being tested for quantitative skills. This includes knowledge-based questions related to things like economics and finance. Unlike other portions of the test, which try to gather information on your reasoning and critical thinking skills, this portion tests your level of knowledge and the skills you have in those areas.