Instruct: Classify Amazon reviews into positive or negative sentiment
Query: multiple errors but still solid advice

I bought this book in preparation for an upcoming ACT test only to find that even in just the Diagnostic Assessment Test there were numerous errors. I was bewildered by the thought that there was actually a test prep book out there with information that can easily mislead the average person. But even though the questions may be faulty themselves, the book still does contain advice that can help improve one's ACT scores.