The first part of the Kepner Tregoe matrix is going through a normal Decision Matrix. Afterwards, the top 3 from this matrix is selected for analysis in the matrix shown just above.
Executing the Method
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Do the Decision Matrix Technique
First, do the decision matrix technique for all alternatives.
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Select Top 3
Select the top 3 scoring alternatives from the decision-matrix.
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List Adverse Effects
For each of these alternative, list the adverse effects (in a table as shown above).
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Score Adverse Effects
Score each of these adverse effects based on their significance (for example with low-high or a 1-5 scale) and probability (the change the adverse effects happens).
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Multiply and Enumerate
Scores can by multiplied by the probability and eventually be summed to form a total score.
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Select Alternative
In general, the alternative with the least strong adverse effects in total can be considered the best alternative.