1 : A system for creating parameter information, comprising: means for creating random characteristic variation data, the means for creating random characteristic variation data calculating variations of plural physical characteristics stored in memory means, decomposing the variations into random variations corresponding to a random variation component of the physical characteristics, and into systematic variations corresponding to a systematic variation component, and creating random characteristic variation data representing the random variations; means for creating sensitivity data, the means for creating sensitivity data creating sensitivity data of typical simulation model parameters with respect to the physical characteristics, from a typical simulation model library and simulation model equations; means for creating variation data, the means for creating variation data creating variation data of simulation model parameters, by dividing the random characteristic variation data by the sensitivity data; and means for creating parameter data, the means for creating parameter data calculating standard deviations for the simulation model parameters and correlation coefficients between the simulation model parameters, from the variation data of the simulation model parameters.