Question 40

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Jambmaths question: 

By how much is the mean of 30, 56, 31, 55, 43, and 44 less than  the median? 

Option A: 

0.75

Option B: 

0.50

Option C: 

0.33

Option D: 

0.17

Jamb Maths Solution: 

$\begin{align}  & Mean=\frac{30+31+56+55+43+44}{6}=\frac{259}{6}=43.16667 \\ & \text{Rearrange the data in increasing order of magnitude} \\ & 30,31,43,44,55,56. \\ & \text{The median fall between 43 and 44, So the median will be} \\ & \frac{43+44}{2}=\frac{87}{2}=43.5 \\ & \text{The difference }=43.5-43.16667=0.3333 \\\end{align}$

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