This area is heavy in spreadsheet calculations like Excel, which I am excellent at. I am proficient in MS Excel functions like Solver for linear programming, Scenario Analysis, Data Table, as well as Excel based programs that include simulations like Crystal Ball, Palisade, etc.
Business Analytics is known by a lot of names like Quantitative Methods of Business or QMB, Operations Management, and Operations Research, Project Management, Inventory management, and Analytics, just to name a few. They are technically separate but have a lot of overlaps. Topics in inventory management include Little Law, newsvendor model, Economic order quantity (EOQ), Economic production quantity (EPQ), reorder points, Queueing theory like MM1, MD1, etc. Topics in project management include PERT CPM models, critical path, project crashing. Topics in forecasting include exponential smoothing, moving average, Holt Winters, etc. Topics in material planning and supply chain include Linear programming, material resource planning, etc. Topics in quality control include Linear programming, process capacity, P chart, X chart, etc.