Question

The following table shows classification of number of workers and number of hours they work in software company. Prepare less than upper limit type cumulative frequency distribution table:

Number of hours daily	Number of workers
8 - 10	150
10 - 12	500
12 - 14	300
14 - 16	50

Answer 1

Number of hours daily	Number of workers	Cumulative Frequency
8 - 10	150	150
10 - 12	500	150 + 500 = 650
12 - 14	300	650 + 300 = 950
14 - 16	50	950 + 50 = 1000