7 This table shows how long a group of 92 holiday-makers are planning to stay in New Zealand. Length of stay (days) 15-21 22-28 41 Frequency 22 35 22 C 1-7 U L 6 8-14 14 29-42 15 a Find the modal class. Give a reason for your answer. b It is not possible to find the range. i Explain why the smallest possible value of the range is 22 days. ii What is the largest possible value of the range?​