Explanation
A tornado diagram is a type of bar chart that shows the effect of varying different input parameters on an output variable. It is often used in sensitivity analysis to compare the relative importance of different factors or uncertainties that affect the outcome of a decision, project, or model. A tornado diagram typically has a horizontal baseline that represents the base case value of the output variable, and vertical bars that extend to the left and right of the baseline to show how the output changes when each input parameter is varied from its minimum to maximum value, while holding all other parameters constant. The bars are usually sorted by their length, creating a shape similar to a tornado. The longer the bar, the more sensitive the output is to that input parameter. A tornado diagram can help identify the key drivers of the output variable, as well as the parameters that have little or no impact.