Jambmaths question:
|
Score (x) |
0 |
1 |
2 |
3 |
4 |
5 |
6 |
|
Fre(f) |
5 |
7 |
3 |
7 |
11 |
6 |
7 |
Find the mean of the data
Option A:
3.26
Option B:
4.91
Option C:
6.57
Option D:
4.26
Jamb Maths Solution:
$\begin{align} & mean=\bar{x}=\frac{\sum fx}{\sum f} \\ & \bar{x}=\frac{(0\times 5)+(1\times 7)+(2\times 3)+(4\times 11)+(5\times 6)+(6\times 7)}{5+7+3+7+11+6+7} \\ & \bar{x}=\frac{0+7+6+21+44+30+42}{46}=\frac{150}{46}=3.26 \\\end{align}$
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