Question

The following table shows the daily wages of workers in a factory:

Find the median daily wage income of the workers.

Answer 1

Now, N = 150 

⇒ N/2 = 75. 

The cumulative frequency just greater than 75 is 120 and the corresponding class is 200 – 300. 

Thus, the median class is 200 – 300. 

∴ l = 200, h = 100, f = 48, cf = c.f. of preceding class = 72 and N/2 = 75. 

Now

Hence, the median daily wage income of the workers is Rs 206.25.