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beibei4891(½ð±Ò+1,VIP+0):лл 11·Ö´ú±íÐÄÒâ. ÁíÍâ9·Ö¸øÁËÔùË͸øÁËÁíÍâÒ»¸öÈË,ллÄãÃǵİïÖú.
CPI index reflects a certain period of life of residents in the purchase of consumer goods prices and service projects and trends in the extent of price changes over the relative few, the use of very wide, which includes China's CPI index of the number of information? This paper will explore the issue.
          This paper collected from 1951 to 2006 the annual CPI data, use simple descriptive statistics analyzed its mean, variance, skewness, kurtosis and normality, and other characteristics; then this paper describes an effort to establish suitable for CPI annual changes of the ARMA model, the pattern of changes in the CPI structural analysis model, from the true value, residual value and fit the timing plans that fit the general effect, further consideration of the abnormal value analysis; then the model amendment that an appropriate model.
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