20 minutes). Multiple-choice questions, and short essay and n-solving-type questions (100 points in total). Use ProctorFree (no scheduling needed) or UNC Online uling in advance needed) to complete this exam individually, by deadline. ass. ss: Do not reveal any information related to the content of this quiz to anyone who has not taken this quiz or OT engage in any suspicious behavior: Closely follow the exam's instructions (e.g, make sure your camera is that your face is visible at all times; NO headphones; No cell phone; NO study guides; NO notes; NO other ites can be open while taking the exam, etc., unless it is specified otherwise). Failure to do so, can result in us and negative consequences. Question 15 7 pts Which classes below may have a more meaningful order than the rest of the classes mentioned below? O nominal classes dummy variables O ordinal classes none of them Next * Previous nome prt sc F10 F9 F8 F6 F5 8