According to the present situation of non-life insurance companies in our country, the weighted average method of index for which the weights of indices are determined by the grey incidence degree which is the ratio of each solvency influence factor index to solvency is put forward and the solvency of non-life insurance companies is monitored and controlled by employing the method.

The application of average index in statistical analysis;

This paper analyzes and evaluates the influencial factors in current average index changes.

These key areas,industries and enterprises of energy-saving and pollution-reducing can be finded by use of average index,targeted policy measures will be used,and good results of energy-saving and pollution-reducing will be achieved at last.

This paper discusses the computation of the mean indices under fuzzy conditions, and develops a technique to deal with this problem by fuzzy extension principle.

In this paper, we discuss the methods of drawing up synthetic exponent, average exponent and average index exponent.

Based on the laser three-dimensional(3-D)digitization system with light stripe method,a grouping and deleting method is proposed to delete the stray points in the original data set,and a coordinates averaging method is proposed to splice the data sets obtained by two adjacent sensors.