Given below is a cumulative frequency distribution table showing the ages of people living in a locality:


Age in years



No. of persons



Above 108


Above 96


Above 84


Above 72


Above 60


Above 48


Above 36


Above 24


Above 12


Above 0



0


1


3


5


20


158


427


809


1026


1124



Prepare a frequency distribution table.


Age (in years)



No. of persons



Class interval



Frequency



Above 0



1124



0-12



98



Above 12



1026



12-24



217



Above 24



809



24-36



382



Above 36



427



36-48



269



Above 48



158



48-60



138



Above 60



20



60-72



15



Above 72



5



72-84



2



Above 84



3



84-96



2



Above 96



1



96-108



1



9