The errors in question have been previously confirmed by the Education Subcommittee and Garth Thimgan (author) and subsequently corrected.
The attached Errata shows all the issues that were fixed and are correct in the 2015 printing of the book.
The online eBook version is also currently correct. The errors are in the original 2010 printing of the book.
Click here for the Errors & Corrections.
IAAO Marketplace to purchase Property Assessment Valuation – Third Edition http://www.iaao.org/store/detail.aspx?id=BK0097