Statistics and multiwavelength synthesis models: towards a new generation of synthesis models

In this contribution I present my current work in a new generation of evolutionary synthesis models that compute the multiwavelength energy distribution (from gamma-rays to radio) as well as the associated dispersion for young stellar systems. I will also show some statistical effects that may appear in the analysis of surveys, like bimodal or multi-modal distributions and bias when color indices computed by the codes are compared with observations. Such new generation of synthesis models may be useful for the analysis of the data expected from GTC.