Find the mean deviation of 2 4 5 and 9 - JAMB Mathematics 2008 Question
Find the mean deviation of 2, 4, 5, and 9
A
1
B
2
C
5
D
7
correct option: b
X = 20/4
= 5
mean deviation = 8/4 = 2
= 5
mean deviation = 8/4 = 2
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