The table shows the ages in years of twenty chi... - WAEC Mathematics 2007 Question
The table shows the ages(in years) of twenty children chosen at random from a community. What is the median of the distribution? (\begin{array}{c|c} Age(years) & 1 & 2 & 3 & 4 & 5 \ \hline {\text {Number of children}} & 2 & 3 & 5 & 6 & 4 \end{array})
A
3.5 years
B
3.0 years
C
2.5 years
D
2.0 years
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Correct Option: A
Median = ((\frac{n + 1}{2})^{th})
= (\frac{20 + 1}{2} = \frac{21}{2})
= 10.5
= (\frac{{\text{10th term and 11th term}}}{2})
= (\frac{3 + 4}{2} = \frac{7}{2})
= 3.5yrs
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