Question

The median of the following observations 11, 12, 14, (x - 2), (x + 4), (x + 9), 32, 38, 47

Answer 1

the median is x+4

$(x - 2).(x + 4).(x + 9) = \\ x - 2 \times x + 4 \times x + 9 \\ x + x + x - 2 + 4 + 9 = \\ 3x + 11 = \\ x = 11 \div 3$