The presence of diffusible hydrogen is one of the conditions for generation of cold cracks in welded joints and contributes to their porosity. In the work it was attempted to determine the gravity of selected technological factors in formation of diffusible hydrogen in weld metal what would make possible to forecast its content through changes of welding parameters. The statistical analysis of experimental results gathered during literature survey referring to the considered issue enabled to assess the gravity of the impact of seven factors on the amount of diffusible hydrogen in weld deposit of H10 class rutile flux-cored wire and to develop for them three forms of statistical models.