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JAMB Mathematics 2012 Paper

Question : 33

Total: 48

Find the median of 2,3,7,3,4,5,8,9,9,4,5,3,4,2,4 and 5

Solution:

Concept:

The median is the middle value of an ordered data set.

When the number of terms is even, it is the average of the two middle terms.

Explanation:

Arrange the data in ascending order:

2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 7, 8, 9, 9

There are

16

values, so the median is the average of the

8

th and

9

th terms.

The

8

th term is

4

and the

9

th term is

4

Median

= \frac{4 + 4}{2} = 4

Answer:

4

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