waecmaths question:
|
Scores |
0 – 4 |
5 – 9 |
10 – 14 |
|
Frequenct |
2 |
1 |
2 |
The table shows the distribution of the scores of some students in a test. Calculate the mean score.
Option A:
5.6
Option B:
6.2
Option C:
6.6
Option D:
7.0
waecmaths solution:
$\overline{x}=\frac{(2\times 2)+(7\times 1)+(12\times 2)}{5}=\frac{4+7+24}{5}=\frac{35}{5}=7$
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