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 :
👉 Chapter 22 👈
