1. A method for displaying results of hybridization experiments using a biochip, the method comprising the steps of: providing a biochip having a spot region divided into a plurality of sections, wherein the same type of control material that has been diluted to different concentrations is spotted in multiple spots in each of the sections; performing a hybridization reaction using a mixed sample prepared by mixing two different types of samples, each of which has been labeled with each of two different fluorescent dyes so as to obtain, for each control, measurement data concerning the intensities of two different types of fluorescent signals emitted from the two fluorescent dyes; plotting the data on a graph for each section, wherein the vertical axis and horizontal axis each represent the signal intensities of each of the two types of fluorescent signals; and simultaneously displaying on a single screen all of the graphs, each representing the data for one of the sections, in such a manner that the graphs are arranged in the same arrangement as that of the sections on the biochip.