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Rating: 
Summary: Great refresher!
Review: I bought this book to use as a refresher to basic statistical concepts and it has worked great. Like so many subjects, if you don't use statistical techniques on a regular basis, you tend to forget. This book can bring you back quickly when you need it (...now what's a z-score again?...)To the point mentioned by another reviewer however, there are errors in the book, which is really a problem. I've noticed a few more that the other reviewer didn't even mention. If you follow closely however, you'll figure it out (and perhaps learn it better). Koosis needs to put out an "errata" web site. Unlike that reviewer, I like the technique of constant question and immediate answer, it really helps you keep moving on.
Rating:
Summary: Great refresher!
Review: I bought this book to use as a refresher to basic statistical concepts and it has worked great. Like so many subjects, if you don't use statistical techniques on a regular basis, you tend to forget. This book can bring you back quickly when you need it (...now what's a z-score again?...) To the point mentioned by another reviewer however, there are errors in the book, which is really a problem. I've noticed a few more that the other reviewer didn't even mention. If you follow closely however, you'll figure it out (and perhaps learn it better). Koosis needs to put out an "errata" web site. Unlike that reviewer, I like the technique of constant question and immediate answer, it really helps you keep moving on.
Rating: 
Summary: Too brief, too many errors!
Review: This book falls severly short of the material covered in a college "cookbook" intoduction to statistics course. The book design of having the answers presented right after the question/exercise is a pain. One must make an effort to keep the answers covered while reading the question. For a fourth edition book, there are too many errors. Page 162 - X-bar sub 4 is incorrect. Page 195 - second part of the answer equation is incorrect. Page 203 - second formual at top is incorrect. Page 233 - table erroneously use Chi-Squared symbol in heading where X-squared is needed. Also, answer to question 13 is incorrect. Page 235 - second formula missing [] where called for. Page 249 - formula for Chi-Squared is incorrect.
Rating: 
Summary: Basic Primer for Non-Statistical Learners - Teaching Tool!!
Review: This book is a great primer for people who want to learn the basics of statistics. It covers confidence, significance, t-tests, f-tests and anova, plus it gives an introduction to regression and DOE. This is a basic learning book, good for teaching non-technical people how to relate to statistical information and get them into the field. Has multiple examples of how to use computer spreadsheets to solve simple statistical problems. Hats off to Mr. Koosis!! I wish he would write more books on the subject!
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