Question

Find the median of the following frequency distribution
Mark's- 5,10,15,20,25,30,35
No. of students - 2,5,12,11,13,9,7​

Answer 1

Answer:

median = (N/2+N+1/2)2. FOR EVEN

AND. N+1 / 2. FOR ODD

So

No of students is our frequency and to find out N we must find cumulative frequency.(CF)

(CF) = 59

59 IS ODD

SO MEDIAN = 59+1 th observation/2

= 60/2= 30th observation

Ans = 20