Jambmaths question:
Find the mean of the data 7, –3, 4, –2, 5, –9, 4, 8, –6, 12,
Option A:
3
Option B:
4
Option C:
1
Option D:
2
Jamb Maths Solution:
$\begin{align} & mean=\overline{x}=\frac{7-3+4-2+5-9+4+8-6+12}{10} \\ & mean=\overline{x}=\frac{20}{10}=2 \\\end{align}$
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