The statistical analysis of family names of donators for wenchuan

It is analyzed that the family names of personal donators who donated through China Construction Bank Corporation to Chinese Red Cross Foundation for the WenChuan earthquake. The distribution of family names, the first 100 family names and their shares, the probability of the same family names as well as the Gini coefficient are all given in this paper. A heavy disproportion is showed in the distribution, that is to say a small part of family names occupy the absolutely large proportion while most of them are rare. This character is similar to power-law that has been observed in many demonstrations about family names. However, the Kolmogorov-Smirnov test fails to support the hypothesis. Instead, part of the data shows an exponential characteristic. As an innovative sampling method, the discussion may help to know the family name's distribution of China.