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begin array c c Age amp 20 amp 25 amp 30 amp 35... - JAMB Mathematics 2013 Question

(\begin{array}{c|c}Age & 20 & 25 & 30 & 35 & 40 & 45 \

\hline \text{No. of people} & 3 & 5 & 1 & 1 & 2 & 3 \end{array})

Calculate the median age of the frequency distribution in the table above

A
25
B
30
C
35
D
20
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Correct Option: A

N = (\sum f) = 15

Hence the median age is the (\frac{N + 1}{2})th age, i.e.

(\frac{15 + 1}{2})th = 8th

From the table, the age that falls on the 8th position when arranged in ascending order is 25years

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