Chen, Chih-nan; Watanabe, Tsutomu; Yabu, Tomoyoshi - 2009
carried out only on 7 percent of the total business
days, that is, 214 out of 3,055 business days, during the sample period … small, short-term effects, and
10
interventions were carried out is 165 out of 1,101 business days during the period from …
probability was 0.03 (49 intervention days out of 1,954 business days). On the other hand, the
average yen amount of interventions …