This information is for planning purposes only. The information herein is subject to change or removal without notice before the products described may become available.
The CE/CLM products were renamed in version 7.0. As the help is updated to reflect the changes, the topics might contain inconsistencies. For details on the name change, see Renaming the IBM Continuous Engineering Portfolio.

# How risk assessment scores are calculated

This topic describes how risk assessment scores are calculated.

• The risk assessment score for an individual risk is the average of the Likelihood, Impact, and Current® Impact values. Importance is not part of the calculation. Likelihood, Impact, and Current Impact are rated on a scale of 1-3 (for Low, Medium, or High), but the overall assessment score for a particular risk is calculated to be anywhere from 0-5. The software uses a formula is to convert from the 1-3 scale to a 0-5 scale.
• If Current Impact is set to No Impact, the assessment score of the individual risk is simply set to 0.
• If Current Impact is set to Unassigned, Current Impact is not included in the calculation.
• If Current Impact is set to Low, Medium, or High, then the following formula is used:
``Risk Assessment = ((Likelihood + Impact + Current Impact)/3) * 2 - 1``
• For dynamic risks, such as Test Case Weight, the assessment score is based only on the pre-defined settings. Current Impact is not part of the assessment.
Note: Currently, Test Case Weight is the only dynamic risk.
• The overall risk assessment score for the test plan, test case, or test suite is the weighted average of the risk assessment score for each row, weighted by Importance. Importance can be set from 1 to 5, with 3 or neutral being the default.
Example 1:

Likelihood = Medium , Impact = Medium, Current Impact = High

``((2 + 2 + 3)/3) * 2 - 1) = 3.666``
Example 2:

Likelihood = Low , Impact = Medium, Current Impact = Medium

``((1 + 2 + 2)/3) * 2 - 1) = 2.333``
Note: The reported risk assessment ignores any numbers to the right of the decimal point. Thus, 3.666 is rounded off to 3.

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