Risk-ReturnTradeoff a situation where an investor is willing to take on more risk when there is the possibility of a greater return.
风险回报权衡指当有更大回报可能时投资者不愿再冒风险的情形。
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This paper constructed a new index: risk-returntradeoff ratio (RRTR), for portfolio selection, based on a premise that the reason of investors bearing the risks is to gain the super returns.