Question

The monthly profits (in Rs.) of 100 shops are distributed as follows:

Profits per shop:	0 - 50	50 - 100	100 - 150	150 - 200	200 - 250	250 - 300
No. of shops:	12	18	27	20	17	6

Draw the frequency polygon for it.

Answer 1

Firstly, we make a cumulative frequency table.

Profit per shop	No. of shop	More than profit	Cumulative frequency	Suitable points
0-50	12	0	100	(0, 100)
50-100	18	50	88	(50, 88)
100-150	27	100	70	(100, 70)
150-200	20	150	43	(150, 43)
200-250	17	200	23	(200, 23)
250-300	6	250	6	(250, 6)

Now, plot the frequency polygon (or more than ogive) using suitable points.