#### Find the mean and the median of the following set of numbers:

8, 0, 5, 3, 2, 9, 1, 5, 4, 7, 2, 5.

**Solution:**

In descending order

0, 1, 2, 2, 3, 4, 5, 5, 5, 7, 8, 9

n = 12 which is even

Mean (x̄) = Ʃ x_{i}/n

= (0 + 1 + 2 + 2 + 3 + 4 + 5 + 5 + 5 + 7 + 8 + 9)/12

= 51/12

= 17/4

= 4.25

Median = ½ [12/2th + (12/2 + 1)th terms]

= ½ [6^{th} + 7^{th} terms]

= ½ (4 + 5)

= 9/2

= 4.5

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