The value of the mean consistency index RI given in the paper is short of theoretic basis,this paper give a new method,which s objectivity is better than one above,for defining the mean random consistency index,and gives its computing method of the critical for judging matrix consistency index and degree of confidence.

This function can be used to measure the similarity between individual preference and to construct individual and group consensus index.

The first function can be used to construct individual and group consensus index, the group consensus definition and the methods of searching group consensus vectors are given by the individual vectors.

And last,came to a conclusion from the statistical figures of the judgement matrix s consistency index-the judgement matrix built in 9/9-9/1 scale system has the best consistency.

In view of practical investment decision-making language restriction is usually adopted, group decision-making of securities investment fund is based on consistency index of possibility distributions, FOWA operator and language quantifiers.

This paper pointed out the importance of accurately evaluation the test result of the average trajectory consistency, analyzed the shortcoming that exist in the currently in effect test evaluation method of home and abroad, put forward a new test evaluation method that coherent with the demand of fighting and training.