| The purpose of this article was to introduce the basic concepts, calculation methods, two examples and SAS implementation related to the qualitative data correspondence analysis(QDCA) and Shannon information quantity analysis(SIQA). Basic concepts included contingency table and Burt table, marginal probability, row profile and column profile, information and information volume, entropy; the calculation method involved the qualitative data correspondence analysis and Shannon information quantity analysis; the data in the two examples were "detection of 4 kinds of thyroid diseases in different seasons in a hospital in 3 years" and "distribution of 4 temperament types of students in different majors"; with the help of SAS software, QDCA and SIQA were carried out on the data in the two examples, and a reasonable explanation was made for the SAS output results. |