ON THE PREMIUM FOR REVENUE INSURANCE UNDER JOINT PRICE AND YIELD RISK
研究农业收入保险在价格和产量风险联合作用下的定价问题，分析了风险依赖程度对预期赔付的影响，并给出了收入保险保费与单一风险保险保费比较的充分条件。
This note provides two results pertaining to the pricing of agricultural revenue insurance contracts under joint price and yield risk. First, a weakening of the concordance ordering is used to sign the effect of greater dependence between the multiplicative risks (price and yield) on the expected indemnity payment. Second, sufficient conditions are found when the premium rate for revenue insurance is smaller (greater) than the premium for the corresponding single risk (price or yield) insurance.