Question

Class- 0-10 10-20 20-30 30-40 40-50 and frequency of class are 5 15 13 17 10 resp.for the frequency distribution given above,(n\2-cf)=?

Answer 1

Class frequency cf less than type
0-10 5 5
10-20 15 20
20-30 13 33
30-40 17 50
40-50 10 60
N=60

n/2=60/2=30
median class20-30
cf=20
(n/2-cf)=(30-20)=10