1. A model creation support system capable of accessing an information processing apparatus that predicts or analyzes a phenomenon and a factor contributing to the phenomenon to be a target for prediction or analysis, using a model that is data indicating a regression equation, the system comprising: a model managing part that acquires, from the information processing apparatus, an identifier of the model, the regression equation of the model in which the phenomenon is represented by an objective variable and the factor is represented by an explanatory variable, phenomenon data that includes an objective variable ID identifying the objective variable of the regression equation and information indicating the phenomenon represented by the objective variable, factor data that includes an explanatory variable ID identifying the explanatory variable and information indicating the factor represented by the explanatory variable of the regression equation, and evaluation data containing a fitting degree of the model and accumulates them in a model recording part accessible from the model creation support system; a factor value extracting part that extracts, by referring to the evaluation data on at least one model in the data accumulated in the model recording part, an objective variable ID and an explanatory variable ID identifying an explanatory variable representing a factor that contributes to enhancement of the fitting degree of the at least one model and records factor value data that associates the phenomenon data of the extracted objective variable ID, the factor data of the extracted explanatory variable ID and data indicating a degree of the contribution in a factor value recording part accessible from the model creation support system; a condition acquiring part that receives a request for supporting model creation from the information processing apparatus, and further receives an input of model condition data containing data indicating a phenomenon to be a target of a requested model; and a model proposing part that matches the data indicating the phenomenon to be a target of the requested model contained in the model condition data with the phenomenon data associated by the factor value data in the factor value recording part, thereby extracting a recommended factor capable of contributing to the enhancement of a fitting degree of the requested model and outputting support data containing data indicating the extracted recommended factor to the information processing apparatus.