BECE Mathematics 2015 Paper

Concept:The median is the middle value of a data set when the numbers are arranged in ascending order.Explanation:First, arrange the given numbers from the smallest to the largest.$8, \; 12, \; 13, \; 14, \; 15, \; 16, \; 17, \; 18$This ordered list contains 8 numbers, which is an even count.For an even number of observations, the median is the average of the two middle numbers.The two middle numbers are the 4th and 5th terms of the ordered list.These two terms are $14$ and $15$.Add the two middle numbers and divide the sum by 2.$\text{Median} = \frac{14 + 15}{2} = \frac{29}{2} = 14.5$Thus, the median of the given data is $14.5$.Answer:$14.5$, which matches option C.