Jambmaths question:
|
Marks |
2 |
3 |
4 |
|
Frequency |
4 |
4 |
y |
The table above show the frequency distribution of marks obtained by a group of students. If the total marks is 48, find the value of y
Option A:
6
Option B:
8
Option C:
7
Option D:
5
Jamb Maths Solution:
$\begin{align} & fx=(2\times 4)+(3\times 4)+(4\times y)=48 \\ & 8+12+4y=48 \\ & 4y=28 \\ & y=7 \end{align}$
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