Question

During the medical check-up of 35 students of a class their weights were recorded as follows:

Weight (in kg)	38-40	40-42	42-44	44-46	46-48	48-50	50-52
No. of students	3	2	4	5	14	4	3

Construct a ‘less than series’ and ‘more than series’ for the given data.

Answer 1

No. of students whose weight in the range of (0 - 38) kg is 0. By converting normal form into less than and more than series.

Weight in (kg)	No. of students
Less than 38	0
Less than 40	3
Less than 42	3 + 2 = 5
Less than 44	5 + 4 = 9
Less than 46	9 + 5 = 14
Less than 48	14 + 14 = 28
Less than 50	28 + 4 = 32
Less than 52	32 + 3 = 35

 

Weight (in kg)	No. of students
More than 38	35
More than 40	35 - 3 = 32
More than 42	32 - 2 = 30
More than 44	30 - 4 = 26
More than  46	26 - 5 = 21
More than 48	21 - 14 = 7
More than 50	7 - 4 = 3
More than 52	3 - 3 = 0