The new method USES reference portfolio formed on the base of corporation market value to calculate long-run abnormal returns, USES adjusted-t test or rank test to test abnormal returns.

改进的长期异常回报率计算方法是基于市值的参考组合法，改进的检测方法是偏度矫正的t检验法和秩和法。

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So long-bond buyers in today's market run the risk of purchasing something that is extremely likely to lose value while gaining nothing or next to nothing in yield pick-up.

ECONOMIST: Buttonwood