Question

32. Find the median of the following frequency distribution:
Classes 0-10 10-20 20-30 30-40 40-50
Frequency
8 20 8 7 7​

Answer 1

Step-by-step explanation:

ci. fi. cf

0-10. 8. 8

10-20. 20. 28

20-30. 8. 36

30-40. 7. 43

40-50. 7. 50

£fi=50

median=l+[(n/2-cf)h]/f

here N=50

N/2=25

l=10

cf=8

h=10

f=20

now ,median=10+[(25-8)10]/20

median =10+[(17)10]/20

=10+[170]/20

=10+8.5

=18.5

therefore median =18.5