Question 14

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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