Question

If the mean of the observations a, a + 6, a + 2, a +8 and a + 4 is 11, find :
(i) the value of 'a'
(ii) the median​

Answer 1

Answer:

(a + a + 6 + a + 2 + a + 8 + a + 4) / 2 = 11

(5a + 20) = 22

5a = 2

a = 2/5

Median = a + 2 = 2/5 + 2 = 12/5