This is the penultimate stage of the data analysis rating activity. By summarising the Maturity rating the individual TMMi Maturity Level scores become available. Once the individual Maturity Level Scores are determined they are then examined together to finalise the overall organisational Maturity Level. Before we do that, let us look at how the individual Maturity Level scoring is performed by seeing a few examples.
Scoring individual Maturity Levels is relatively simple – the Maturity Level is based on the weakest rating for the relevant Process Area.
In this example, all five Process Areas have been rated as Fully Achieved. Therefore, the Organisational Unit has Fully Achieved this Maturity Level overall.
In this example, one of the five Process Areas has been rated as Fully Achieved while the other four are rated Largely Achieved. Therefore, the Organisational Unit has obtained a Maturity Rating of Largely Achieved; the weakest rating of the Process Areas contained within the Maturity level.
In this example, four of the five Process Areas have been rated as Fully Achieved while the fifth is rated as Partially Achieved. Therefore, the Organisational Unit has obtained a Maturity Rating of Partially Achieved; the weakest rating of the Process Areas contained within the Maturity level. This is despite the fact that the great majority of the Maturity level is performed very well.
All of the examples above used Maturity Level 2 – Managed. If the Organisation was only assessed to Level 2, then their overall Maturity Level achieved would be the Maturity Level scores shown. With higher Levels being assessed, the picture is not so simple, as we will see in the next section.