This table below gives the scores of a group of students in a Further Mathematics Test. Score 1 2 3 4 5 6 7 Frequency 4 6 8 4 10 6 2 Calculate the mean devi...

Assessment: JAMB UTME - Mathematics - 2019 Subject: General Mathematics

Question 1 Report

This table below gives the scores of a group of students in a Further Mathematics Test.

Score 1 2 3 4 5 6 7
Frequency 4 6 8 4 10 6 2

Calculate the mean deviation for the distribution

Answer Details
Score(x) 1 2 3 4 5 6 7 Total
Frequency (f) 4 6 8 4 10 6 2 40
fx 4 12 24 16 50 36 14 156
x –  x ¯ -2.9 -1.9 -0.9 0.1 1.1 2.1 3.1
|x –  x ¯ | 2.9 1.9 0.9 0.1 1.1 2.1 3.1
f|x –  x ¯ | 11.6 11.4 7.2 0.4 11 12.6 6.2 60.4

Mean =  ∑ f x ∑ f

=  156 40

= 3.9

M.D =  ∑ f | x – x ¯ | ∑ f

=  60.4 40

= 1.51

Download The App On Google Playstore

Everything you need to excel in your exams

Green Bridge CBT Mobile App
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