Subjective Rating and Ranking

This is a very commonly and easy to use matrix where the possible causes generated through brainstorming or other group activities are rated by a team of experts first individually.For convenience and clarity , the rating is done as 0(No Significance ), 1(Little Significance ) , 3 (May be significant ) and 9 ( Highly significant). Once the entire team has rated the possible causes , they are grouped and ranked ( normally by using median )and higher ranked reasons are worked on priority. This serves a good tool if the team consists of members having very good knowledge of the subject.