Prime DSE Series - Mathematics Mock Exam Papers (Compulsory)(Sixth Edition) Set 2 Paper 1&2

8 HKDSE-MATH-CP (Set 2 P1) Answers written in the margins will not be marked. Answers written in the margins will not be marked. Answers written in the margins will not be marked. © United Prime Educational Publishing (HK) Ltd. SECTION A(2) (35 marks) 10. The stem-and-leaf diagram below shows the distribution of the weights (in kg) of the players of a basketball team. Stem (tens) Leaf (units) 4 5 6 7 7 8 9 1 a a a 5 9 0 0 1 1 2 2 2 6 9 5 b It is given that the range of the distribution is the triple of its inter-quartile range. (a) Find a and b . (3 marks) (b) A player now leaves the basketball team and the range of the distribution is decreased. Someone claims that the standard deviation of the distribution after the leaving of the player is greater than 7.2 kg. Do you agree? Explain your answer. (2 marks) Sample © United Prime Educational Publishing (HK) Limited 2025 All rights reserved; no part of this publication may be reproduced, photocopied, recorded or otherwise, without the prior written permission of the Publisher.