The book is in good condition, but it has sticky notes and highlighting. Please refrain from purchasing if you are concerned about this. The points of focus differ depending on the reader, so I hope it will be helpful as a reference for your input. *Regarding the sticky notes and highlighting, I have done this with the intention that when I reread the book, I can read only those parts to understand the points I felt were important and the essence of the book. This is based on the idea that it's good to reread such books many times until they become part of you. The above is just my criteria and way of thinking, but I hope it will be helpful. Only uses junior high school math! Almost no knowledge of probability is used. Without using calculus or sigma (∑), this groundbreaking book allows you to reach the most important goals of statistics, such as "hypothesis testing" and "interval estimation," in the shortest amount of time, starting from a state with no prior knowledge. While covering the basics, you can systematically understand stock trading risks and returns, and even exit polls for elections. "Complete Self-Study Introduction to Statistics" Hiroyuki Kojima Price: ¥1800 #HiroyukiKojima #Hiroyuki_Kojima #book #society/economy_finance #ConsultingPreparation #Consulting #Strategy #ExternalConsulting #ForeignCapital