Collins Maths Solutions Class 7 Chapter 21

Collins Maths Solutions Class 7 Chapter 21 Data Handling

Welcome to NCTB Solution. Here with this post we are going to help 7th class students for the Solutions of Collins Maths Class 7 Mathematics, Chapter 21, Data Handling. Here students can easily find chapter 7 solutions with exercise wise explanation. Students will find proper solutions for Exercise 21.1 and 21.2 Our teacher’s solved every problem with easily understandable methods so that every students can understand easily. Here in this post all the solutions are based on ICSE latest Syllabus.

Data Handling Exercise 21.1 Solution :

Question no – (1)

Solution :

In ascending order,

= 0, 0, 1, 1, 2, 2, 2, 3, 3, 4, 5, 5, 6, 87,

Mean = 42/14

= 3

Now, Median = 2 + 3/2

= 5/2

= 2.5

Mode = 2

Therefore, Mean = 3, Median = 2.5, Mode = 2

Question no – (2)

Solution :

In ascending order,

32, 32, 33, 45, 648

Mean = 32 + 32 + 33 + 45 + 48/5

= 190/5

= 38

Median = (5 +1/8)th

= 3 rd

Median = 33

Now, mode, = 32

Therefore, Mean = 38, Median = 33 , Mode = 32.

Question no – (3)

Solution :

In ascending order,

20, 22, 24, 24, 30

Mean = 2 + 22 + 24 + 24 + 30/5

= 120/5

=  24

Median = (5 + 1/2)th

= 6/2

= 3rd

Median is = 24

Now, Mode = 24

Therefore, Mean = 24, Median = 24, Mode = 24.

Data Handling Exercise 21.2 Solution :

Question no – (1)

Solution :

Given data,

 Games Throwball Volleyball Basketball Cricket Girls 35 10 35 20

Required Bar graph,

Question no – (2)

Solution :

Given data,

 Cities Agra Mysore Kashmir Goa Varanasi Number of Tourists 20,000 30,000 35,000 40,000 25,000

Required Bar graph,

Question no – (3)

Solution :

Given data,

 Indoor games Carom Chess Chinese checkers Ludo Bowling Number of students 320 400 200 300 260

Required Bar graph,

Question no – (4)

Solution :

Given data,

 Camps Sports Swimming Aerobics Computer Yoga and Meditation Number of students 700 800 500 850 500

Required Bar graph,

Next Chapter Solution :

Updated: June 15, 2023 — 3:09 pm