"Takane is a renowned worker in this field and he draws upon his vast array of papers in the area to write an extremely informative review of the subject. … To bring together all the topics contained in the book, and to present them in such a clear and concise manner, is a great achievement. The author’s aim of promoting principal component analysis as more than just an exploratory data analysis tool has been achieved. … For those interested in the topic, the book is worth purchasing. It would be a useful addition to any library. I wholeheartedly recommend this book."—Journal of Applied Statistics, 2014"Coverage of principal component analysis (PCA) in books ranges from chapters to entire texts. … None of these books nor this line of research, however, describes PCA from the perspective of this text. …Though emphasizing algebra, Takane provides numerous examples that illustrate the methodology."—Robert A. Stine, Journal of the American Statistical Association, September 2014, Vol. 109