Question

For the table given below find cumulative frequency table.

Daily No. of hours	8 – 10	10 – 12	12 – 14	14 – 16
Number of workers	150	500	300	50

Answer 1

Daily No. of Hours	Number of workers (Frequency, f)	Cumulative Frequency (cf)	Calculation
8 – 10	150	150	150
10 – 12	500	650	150 + 500
12 – 14	300	950	650 + 300
14 – 16	50	1000	950 + 50