Instruct: Classify a given review into positive or negative sentiment.
Query: Too many mistakes in the practice exam

I bought this book to help facilitate a review course and found the practice exam at the back was loaded with mistakes on the formula-based questions. Not only typos, but just plain getting the concepts wrong (e.g., trying to calculate based on 1/2 of a standard deviation).I strongly recommend Rita Mulcahy's PMP Exam Prep instead: More expensive but very readable with good review questions.Another option is PMP Exam Cram 2, by David Frnacis and Greg Hornie.