Resumen
The multicriteria decision making methods are a tool that they reduce subjectivity in decision-making by creating a series of filters selection and they help the choice between complex alternatives. They provide designers structure the information rationally and expose it clearly, at the same time allow accurately and orderly identifying all the elements that determine whether a design is the ideal. These methods consider and evaluate all possible alternatives that give solution to the problem. They may have different purposes in each of the stages of selection of alternatives, first can help analyze the problem, task or objective to break it down into a finite number of requirements, and once established the requirements, as aids in estimating for the importance or relative weight of each criterion for each alternative. Against these advantages, they have a major drawback is the subjectivity when assigning weights to each criterion and the evaluation of the different alternatives for the decision maker. In this paper a sensitivity analysis is done that validates the methodology developed in the framework of an investigation that establishes a systematic decision-making by application sequentially various methods of multi-criteria decision so as to reduce to minimise subjectivity associated with any decision process. Sensitivity analysis determines how the selection of alternatives varies when the relative importance of the criteria or project requirements considered in the selection process is changed.