ok thanks Professor. But suppose i wants to know about the corelation between each criteria (i have 10 criteria) then which method i have to use to know about it.
Sorry, I am afraid that I do not understand because to speak of correlation you need two criteria. The correlation of one criterion with itaself is 1.
Do you want to know the correlation berween the weights in two criteria? I do not see what is to be correlated, since they are simply two weights or values
Or, do you want to know the correlation between the set of values that are within criterion C1 to a similar set in criterion C2?
What would that indicate? It will show these values in a possibly broken line. If you compare the broken line for criterion C1 and the one for C2, you can find a correlatation. If it is positively high, it will indicate that in both criteria, values move in the same direction. If it is negatively high it will indficate that they move in opposite directions.