Question

33. Case study based 1: A group of students decided to make a project on Statistics. They are
collecting the heights (in cm) of their 51 girls of Class IX-A, B and C of their school. After
collecting the data, they arranged the data in the following frequency distribution form:
Number of girls
Height (in cm)
135-140
140 - 145
4
7
145 - 150
18
Ett
150 - 155
11
155-160
6
160-165
5
(1
33.1 The class interval with highest frequency is :
(1) 145-150 (b) 150-155
(c) 140-145
(d) 155-160
33.2 What is the width of the class?
(a) 10
(b) 15
(1
(d) none of these
(c) 5
(
33.3 How many students of the height 145 cm and above are there?
(a) 40
(b) 29
(c) 18
(d) 22
33.4 How many students of the height more than 145 cm but less than 155 are there?
( 10
(b) 29
(c) 18
(d) 22

Answer 1

Answer:

..

Step-by-step explanation:

33.1 (C)

33.1 (C) 33.2 (b)

33.1 (C) 33.2 (b) 33.3 (a)

33.1 (C) 33.2 (b) 33.3 (a) 33.4 (c)