A sensitivity analysis is conducted in order to evaluate to relevance of the weighted sum results. This is a necessary step to make sure that the analysis conducted is stable. In order to do this, I conducted another weighted sum analysis, but applied an equal weight across all factors to see if the two weighted sum models differentiated.
The above image depicts blue as the equal weighted sum analysis and the red as the original weighted sum analysis using differing weights for each factor. The area in purple is where these two results overlap.