Sensitivity analysis reveals the inputs with the biggest impact on your best evaluated analysis.
The tool works by changing selected inputs in your analysis one-by-one to see how much they change evaluation figures.
You can choose to run sensitivity analysis for:
You can choose different +/- percentages to see how your best evaluated alternative changes when the corresponding inputs are increased/decreased by those percentages.
Sensitivity details are displayed in the form of a horizontal bar chart.
Each horizontal bar represents an input that has been changed during sensitivity analysis, according to your selected options.
The horizontal bars are aligned around a central vertical line which represents the base evaluations for the best alternative.
When sensitivity analysis changes each input, the horizontal bars extend out from the central line to show how much those changes impact the base evaluation.
If changing an input also changes the best alternative, a red icon appears next to that input's horizontal bar.
Sensitivity analysis allows you to identify key inputs by showing:
In both cases, you should consider giving these inputs special attention to ensure they are as accurate as possible.