SPM 2020 Add Maths Paper 2, Question 3Statistics
Solved on video in English and Bahasa Melayu · Older syllabus, Statistics · 4:44 video
The question
A set of positive integers 1, 4, 5, 7, 8, 9, p, q are arranged in ascending order. If the interquartile range is 5 and the variance is 11, find the value of p and of q.
4:44Step 1
There are 8 data values in ascending order: 1, 4, 5, 7, 8, 9, p, q.
12 more steps, each with the reason for it, in the full solution
Final answer
p = 10, q = 12
Where students lose marks
Watch out: Q1 and Q3 are means of pairs when n = 8, and expand (44 + q)² with its middle term 88q.
Watch every step of this question solved on video (4:44), with the reason behind each step and a box that checks your own answer.
No card. Every past-year question on video, in English and BM.
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