Learn how to apply the Pugh concept selection method to select the best solution. Learn when and why this method is best.
- Your team has done all this great work. You've got several solutions to choose from to address a proven axis. But making that choice can be difficult. There are several ways you can make your decision. Two popular ones are the criteria selection matrix and the Pugh concept selection method. In this video, we'll talk about the Pugh concept selection method. This method is great if you're struggling with using numerical scores in your evaluation. Or if your primary concern is comparing solution alternatives to an existing process, product, or service.
In the Pugh concept selection method, you don't assign a numerical score to each solution on each criteria. Instead, you compare it to a baseline. Each solution alternative is graded as either better, same, or worse, compared to the baseline on each criteria. The baseline is usually the current process, product, or service that you're trying to improve. Symbolically, if it is better, a plus sign is used. If it is the same, an S is used.
And if it is worse, a minus sign is used. It's a simple and effective system. Let's go through an example. Say you're trying to decide what to do for lunch. If we apply the Pugh concept selection method, we have to first define our solution problem alternatives, our criteria, and our baseline. Here, we've decided our baseline is the company cafeteria. The evaluation of solution alternatives is a comparison to this baseline. We'll then arrange our four solution alternatives across the top row.
On the left hand column, we place our criteria. In addition, we have a column of ratings or weights. Here, we indicate a value of each criteria. Remember, some criteria are more important than others. Now, we'll compare the alternative lunch options to the company cafeteria and record our answers in the table. Then, we tally the pluses, minuses, and same evaluations below. We'll also calculate the weighted sums.
Take pizza delivery, as an example. It has a positive score in cost, which is rated a three. And time spent, which is also rated a three. Therefore, the weighted sum of positive scores or pluses for pizza delivery is six. We want to choose a solution alternative with the most pluses and least minuses. Looking at the tally totals at the bottom of the matrix, we see that pizza delivery has two pluses, one minus, and one S.
Factoring in relative weights of the criteria, we see that pizza delivery is still the best option when weighted, at six pluses and two minuses. When completed, the Pugh concept selection method can appear complex. But once you break it down, it's not too bad. In fact, its simplicity and use of a baseline allows it to be quickly applied to both basic and complex comparisons.
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