Using the χ~2 check and the probability gain method, we analysed the result of annual earthquake tendency prediction in our country from 1990 to 2002. Based on it, we made some scientific assessment for the result of annual earthquake tendency consulations. For annual earthquake tendency predictions which are studied, it is 30 per cent or so passing the χ~2 check by 95 per cent of confidence level. The mean result of slip with 6 years is 12.5 per cent or so. By integral evaluation, the value of χ~2 check was less than 95 per cent of confidence level. It shows that at present the practical correspondence rate of earthquake prediction in a year scale is very low in our country. However, by the result of the probability gain more than 1, it reflects that the annual earthquake tendency prediction at present has scientific meaning no doubt.
Pearson χ~2 check
The probability gain G
The annual earthquake tendency prediction