waecmaths question:
The following are scores obtained by some students in a test
8 18 10 14 18 11 13 14 13 17 15 8 16 13
Find the mean score
Option A:
10
Option B:
9
Option C:
8
Option D:
7
waecmaths solution:
$\begin{align} & mean=\bar{x}=\frac{\left( 8+8+10+11+13+13+13+14+14+15+16+17+18+18 \right)}{14} \\ & mean=\bar{x}=\frac{185}{14}=13.214 \\\end{align}$
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