Update Sobol iterative statistics
This MR corrects the statistics involved in the Sobol indexes computations.
It relies on the package developed by Frederique Robinou's work hosted on github.
Prochaines maintenances programmées: lundi 06/05, lundi 03/06, lundi 01/07
Pour plus d'informations: https://doc-si.inria.fr/display/SU/Gitlab
This MR corrects the statistics involved in the Sobol indexes computations.
It relies on the package developed by Frederique Robinou's work hosted on github.