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I have 2 questions regarding AHP 1) I have developed a matrix for AHP analysis but...

I have 2 questions regarding AHP

1) I have developed a matrix for AHP analysis but the CR was greater than 0.1 so what changes I have to do to the

Matrix so that CR become less than 0.1 ???

2) when does CR=0 ???

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Answer #1

1)

If consistency ratio (CR) is greater than 0.1 it means that matrix is too much inconsistent. In order to reduce CR you can try doing following things-

  • You should review subjective judgments or can consider new expert’s judgments.
  • If you are using more number of criteria, try to reduce it by deleting some criteria.
  • If the problem is not with matrix, problem can be in the way the criteria are compared.
  • If still problem is still not solved you can use other Multi criteria Decision-Making Methods.

2)

Consistency ration (CR) is equals to zero when matrix is perfectly consistent.

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