Moderator: Intaver Support
It is only when I use the 'Drag 'n Drop Risk' menu that I get the option to classify the Duration impact in days, instead of percentage or class. However, when I open the Risk afterwards, I cannot edit or see these values anymore. Is it possible to define the Duration impact classes in days? i.e. class 1 = 0-3 days ; class 2 = 3-15 days ; and so on.
However, with quantitative analysis, this risk matrix configuration fails to capture true levels of risk (and is a well known shortcoming of the methodology). Why is this, well for the qualitative configuration, each row or column has no objective values. But for quantitative analysis, without modification they each represent an equal portion of the possible ranges of probability and impacts (0-100%). If we do not modify the ranges, the risk matrix does not provide a valid ranking of risks.
Lets look at a simple example of the same risk both qualitative and quantitative assessment.
Project 500 days The risk has a 40% probability (high) and 100 day impact Medium
1. Probability High (4) x Schedule Medium (3) - 4 x 3 = 12 So not critical, but would considered worth managing.
Now if we run the same analysis quantitatively the risk lands here. It is now located in the Green squares which normally would put it on the watch list.
So well the risk is not critical, the rating the Matrix provides does not communicate its impact well. It is the major issue with using a standard Risk Matrix with quantitative analysis. In most cases, the risk severity scores will not be represented accurately.
The solution is to adjust the ranges for both probability and impact so they align with how you want to assess risk severity,
Here is an example. In this case, we have 4 severity ratings I have adjusted ranges so they more accurately reflect how the team views risk impacts and probabilities and is proportionally in line with quantitative analysis.
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