*3.2. Limitations*

Although the extended calibration procedure solved the limitations of the original calibration method while retaining its most valuable aspects, the authors still mention some limitations for their extended version, and argue that these limitations cannot be solved by minor adaptations to their procedure only. However, they also have shown that managerial partitioning (S0) adds value to the other four steps, and, hence, it would be wise not to throw away this idea. Therefore, in the current study, we propose a novel methodology that is cast into a more comprehensive and more versatile methodology called the *statistical partitioning heuristic*, which is presented in the next section. The six limitations of the extended calibration method mentioned by [20] in their Section 4.2.4 are summarized along the following lines.


In Section 4, the newly developed partitioning heuristic will be discussed, and it will also be shown that the discussed limitations are implicitly taken into account. A summary of the discussed limitations as well as how the new statistical partitioning heuristic has solved them are given in Figure 3.


**Figure 3.** The limitations of the extended calibration procedure are used to provide solutions in the statistical partitioning heuristic.
