Question

Each month the number of days of rain in Cardiff is recorded. The following data was collected over a period of 10 months 11 13 8 11 8 7 8 14 x 15 For these data the median number of days of rain per month is 10.

Answer 1

M = N+1=2

M = 10+1/2

M = 11/2 = 5.5

M = 5TH + 6TH /2

M = 11 + X /2

10 ×2 = 11+X

20-11 = X

9 = X