Analytic Hierarchy Process
Pair-Wise Comparison
Now suppose you have three choices of fruits. Then the pair wise comparison goes as the following
Example of Analytic Hierarchy Process
Making Comparison Matrix
Priority Vector

Making Comparison Matrix
We have 3 by 3 matrix
The diagonal elements of the matrix are always 1 and we only need to fill up the upper triangular matrix.

How to fill up the upper triangular matrix is using the following rules:
If the judgment value is on the left side of 1, we put the actual judgment value.
If the judgment value is on the right side of 1, we put the reciprocal value .