Official certification of the Japan Statistical Society (edited by the Japan Statistical Society) This is a set of 3 textbooks for the Statistical Examination Levels 2, 3, and 4. Level 2 is the revised edition, and Levels 3 and 4 are the old editions. Please see the photos for the condition. The Level 2 textbook has writing in it, mainly in the practice problems, as shown in the photos. - Level 2: Revised Edition, Fundamentals of Statistics - Level 3: Data Analysis - Level 4: Utilizing Data Shipping will be via Yu-Packet Post in a plastic bag.