1. A method of assisting analysis of a production process assisting work for analyzing the relationship between factors which may influence the quality of products in a production process and which is comprised of numeral/text data and quality/characteristic of these products, the method of assisting analysis of a production process causing execution of a designation reception routine receiving at least one designation of a factor from a user at a computer, an arrangement routine arranging images corresponding to said image data related to said received factor in a virtual space in said computer, a display routine displaying the virtual space in which said images are arranged in said display device, a routine repeating said designation reception routine, said arrangement routine, and said display routine until the user judges that there is similarity between adjoining images in the displayed images, an image designation reception routine receiving designation of a plurality of images by the user from images having similarity between adjoining images, a common factor extraction routine for automatically extracting a common factor among factors of said designated images, a relation hypothesis reception routine receiving a hypothesis of a relationship between said common factors designated by the user and quality of products, and a routine verifying the relation hypothesis so as to thereby assist work for analyzing the relationship between factors selected by the user and said product characteristic.