2026-09-10T00:15:19.498180 image/svg+xml Matplotlib v3.10.9, https://matplotlib.org/ © EAGLE BEACON GLOBAL Work out the mean and the range of set \(B\), the...
Question 1 Report
Work out the mean and the range of set \(B\), then compare the two sets. Set \(A\) has mean \(24\) and range \(10\). Set \(B\) is \(12,\ 16,\ 20,\ 26,\ 30,\ 40\). The bar chart in the diagram shows the six numbers in set B.
(a) Work out the mean of set \(B\).
(b) Work out the range of set \(B\).
(c) Write down one comparison of the two sets.
Answer Details
- (a) Add the six values in set \(B\):
\[12+16+20+26+30+40=144\] [M1]
\[\text{mean}=\frac{144}{6}=24\]
The mean of set \(B\) is \(24\) [A1]. - (b) \[\text{range}=40-12=28\]
The range of set \(B\) is \(28\) [B1]. - (c) Both sets have mean \(24\), so they have the same average. However, set \(B\) has range \(28\), compared with range \(10\) for set \(A\). Therefore set \(B\) is more spread out [B1].
Download The App On Google Playstore
Everything you need to excel in your exams
Personalized AI Learning Chat Assistant
200,000+ Exam Questions Across IGCSE, JAMB, WAEC & NECO
Over 3,900 Lesson Notes
Offline Support - Learn Anytime, Anywhere
Green Bridge Timetable
Literature Summaries & Potential Questions
Track Your Performance & Progress
In-depth Explanations for Comprehensive Learning