Question number 21 from the writing skills section of the Saturday form of the 2007 PSAT/NMSQT was removed from scoring. Due to a printing error that affected a significant number of test books, several letters of a word appearing in one of the answer choices for Question 21 did not print properly. To rectify this problem, question number 21 was not scored for any test taker. It is important to note, however, that the removal of this question did not affect the comparability of the 20-80 scaled scores for this section. Even with the removal of this question, the statistical process of equating, which is used to translate raw scores (based on right, wrong, and omitted responses) to scaled scores, ensures that the 20-80 scaled scores on this section are comparable to scores on the writing sections of other editions of the PSAT/NMSQT.