Revised Edition ☆ Japan Statistical Society Official Certification: Statistics検定 Level 3 Data Analysis Japan Statistical Society Price: ¥2241 I bought this last week and have only looked at a few pages. There is no writing in it. I also bought the official problem set a few months ago, and only looked at a few pages, but the cover got bent when I dropped it, please check the photos. I haven't used them much, but please refrain from purchasing if you are concerned about minor details due to home storage.