Question

Weight of 20 students is given in kilograms. Using class interval of 5, make a frequency distribution.

30	45	26	25	42	33	15	35	45	45
45	39	42	40	18	35	41	20	36	48

Answer 1

In the given data, the lowest value is 15, while the highest value is 48. Accordingly, we take (15 - 20) as the initial class interval.

Weight (kg)	Tally Bars	No. of Students
15−20		2
20−25		1
25−30		2
30−35		2
35−40		4
40−45		4
45−50		5
Total		$\sum f=20$