This book is an excellent layman introduction to the practice of basic statistics, and does for that subject what “The Drunkard’s Walk” did for elementary probability, in that the reader will get a mature non-dumbed down exposition within the pages of each of these books. There are obvious limits to the amount of functional knowledge one can get by virtue that without the frequent use of mathematical symbols and formalism, there’s only so much one can unpack in english from the information-dense nature of the respective subjects. That being said, I’m satisfied that a person coming totally fresh to the areas reading this book or Drunkard, will get enough functional knowledge to intelligently pursue further studies, with some guidance on appropriate textbooks, if they so choose.
In many ways, both these books mate well together especially in the historical viewpoint. “The Drunkard’s Walk” will take the reader from antiquity to mostly from the 1500-1700s, with a bit from the 1800s, covering much of probability that had a distinct combinatorial and algebraic flavor, which were the main tools of the day for mathematicians. That book emphasizes the reasoning with “bins & buckets” nature of basic probability, where enumerating objects and taking the quotient on the count of certain types of enumerations over all (or finding clever ways to avoid accounting for all enumerations in a closed form) gets one to the answer.
This book takes the next step, and introduces what can one do with these counting-schemes, with respect to more sophisticated games of chance? There is an intersection in coverage from a historical standpoint as Drunkard’s Walk technically ends in the 1800s, in the time of Laplace and Gauss, and even covers (to my recollection) the methods of least squares, which serves as foundation to the techniques of regression. Though that part was really covered fleetingly. This book also briefly covers the least-square techniques, but is much more focused on taking the tools/concepts like regressions, expectations etc., and applying them to modem games of chance (and skill), the so-called “casino” games, from cards, to roulette, as well as problems of insurance, and other practical concerns.
Here, the book surprised me as not only did it go over the expected material with respect to card games and roulette, but it also introduces the notion of utility within the first few chapters. Here, like the rest of the coverage, the material is introduced historically, tracing the motivational material from Pascal, who was the first to come up with the weighted expectations concept, that allows one to know what is a good (or bad) bet within the context of probabilities and currency, and shows why this naive concept is deficient for the general case (namely that ‘value’ of currency is relative). Here, the book actually doubly-surprised me as the next thing the author introduced was the log-utility, and explained why logging may be important with respect to certain risk/statistics questions. Although the book doesn’t take the final step and introduces one of the log-utilities best applications, the Kelly Criterion with respect to the process of martingales, one can easily understand the basics of that material from a functional standpoint after reading the material here.
The other topic that was covered well were those around the notion of testing, which involved simple applications of the Bayesian formula. These were often explained within the context of medical scenarios, but it served the material well. An interesting fact I learned from the text was that the more modern data-centric version of Bayes’s formula, that integrates the notion of ‘belief’ with respect to priors, originates with Turing. The book makes great use of these concepts in the last quarter of the book where it gorgeous through a standard ‘statistical process’ from choosing a distribution, to estimating it’s parameters, and making inference (all conceptually), and provides great exposition to why it is each step was taken. And as a last surprise the book actually covers the concepts of extreme-values theory, which is somewhat esoteric for an introduction text (much less a layman introduction), yet it’s explanation is so clear that I suspect it will be accessible to most everyone.
This book is a real gem in layman text on statistics, that tries to teach the reader about something, along with “The Drunkard’s Walk”, and possibly “The Perfect Bet”, these 3 books serve as a great conceptual exploration into statistical reasoning, and could definitely serve well as accompanying book in a formal introduction in statistics. Highly recommended.