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management economics finance ugc net financial management jrf accounting philosophy risk management risk asset management capm accountancy marketing cbse net management accounting financial science anuj hrm analytics marketing research research data human resources tax history costing ratio business class xii transaction cost economics strategy agency choice theory investment apt financial economics signalling lemons principle insurance arkelof adverse selection moral hazad irma market for lemons information asymmetry constructionism social social science sociology social construction theory big data missing data data analytics cbse