arxiv ref: 10.7494/csci.2015.16Title: Confronting theoretical predictions with experimental data; fitting strategy for multi-dimensional distributionsAuthors: T. PrzedziĆski, P. Roig, O. Shekhovtsova, Z. Was, J. ZarembaNode: IFJ-PANWork Packages: WP2: Predictions and simulations of signal and backgroundMilestones: M2.3.2 Better control of theoretical uncertainties