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Sensitivity Charts

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Creating and Using Sensitivity Charts

Sensitivity charts help you answer many "what if?" questions about your portfolio. They also help to quickly understand:
• Which attributes have the greatest impact on your projects
• How the rankings change relative to the attributes
• How the model changes relative to changing an attribute's weight

Sensitivity charts get very busy with many projects, so it helps to use zoom-boxes and to create portfolio subsets to compare small groups of projects.

Imagine that you're trying to compare these two projects and want to know at what cost the SMART value score of Project Sagittarius becomes equivalent to Project Andromeda. By drawing a horizontal line across the chart, you can see that if the cost of Project Andromeda was reduced to ~$3,900, it would be equal in value to Project Sagittarius.

Sensitivity charts can be customized using the Sensitivity Chart Preference form.

Sensitivity charts can also help you understand how SMART value scores change when a an attribute weight changes. This is done by creating a “Test Weight” sensitivity chart.

In this chart, you can see how the SMART value scores change as the weight changes. The column of bubbles represents the current “Cost” attribute weight of 5000. If you change the weight, that column will move and the SMART ranking of the bubbles will change.

When we zoom-in, we can see how the SMART value scores change as the weight changes for the 4 projects in the chart. The points “A,” “B,” and “C,” represent points where the intersecting projects change ranking. For example, point “A” represents the weight where Project Delphinus begins to have a higher SMART value score than Project Andromeda, and point “C” represents the weight where Project Columbia out-ranks Project Andromeda.

Next: Using Prioritization Bar Charts