Question

The table below shows that employees in an office , sorted according to their age. Find the median:

Age	Number of workers
25 - 30	4
30 - 35	7
35 - 40	8
40 - 45	10
45 - 50	9
50 -55	8
Total	46

• A. 39
• B. 44
• C. 42
• D. 37

Answer 1

Answer:

C. 42

Age	Number of workers
below 30	4
below 35	11
below 40	19
below 45	29
below 50	38
below 55	46

N/2 = 46/2 = 23

median = l + (n/2 - cf)/f × h

= 40 + (23 - 19)/10 × 5

= 40 + 4/10 × 5

= 40 + 2

= 42