Abstract

In this paper, we consider the control of economic policy as the program management. Composite Index is very important for the estimation of business trend. It is calculated by integrating index reflecting economic conditions like production and employment. New detection method of outliers was introduced on 2004, when the tax revenue moved far apart from the business trend. In the period of Lehman's fall, this method unexpectedly judges the value outlier and makes mistake in dealing the values. We propose another method of judging outliers against this problem.