NCERT Solutions for Class 4 Maths Chapter 14 - Data Handling

Page No. 203

Look at the questions asked by Rohan and Anjali.

Tick the question that is the most appropriate for finding the ‘most liked subject’? 

Ans: 

Why do you think so? Discuss with your friends and teacher.

Ans: Do it Yourself!

Anjali and Rohan recorded the children's answers (responses) to the above question as follows:
They wrote M for Mathematics, L for Languages, T for The World Around Us, A for Arts and P.E. for Physical Education.

Look at the children’s responses above and answer the following questions:

• The number of children who like Mathematics the most is _____________ .
• The number of children who like Language the most is ____________ .
• The number of children who like The World Around Us the most is ___________ .
• The number of children who like Physical Education the most is ___________ .
• The number of children who like Arts the most is _____________ .

Ans: 

• The number of children who like Mathematics the most is 10.
• The number of children who like Language the most is 8.
• The number of children who like The World Around Us the most is 7.
• The number of children who like Physical Education the most is 11.
• The number of children who like Arts the most is 9

Page No. 205

Let’s fill the above information in this table.
Ans: 

Q: Now look at the above table and answer the following questions:

• What is the most common favourite subject among the children? ________________ 
• What is the least common favourite subject among the children? ________________

Ans: 

• The most common favourite subject is Physical Education (P.E.) with 11 children choosing it.
• The least common favourite subject is The World Around Us with 7 children choosing it.

 There are the following two ways to display the information.

Which way of displaying information is easier to understand and why? ____________
Ans: The table (option 2) is easier to understand because it clearly shows the number of children for each subject in an organized way. It is simple to compare the numbers directly, unlike the list (option 1), which requires counting each response.

Page No. 206

Colourful Golas

During school lunch break children rush to eat gola of their favourite colour. 

Rohan and Anjali record the golas eaten by different children. They want to eat the one that is most eaten by others. 

They both start recording the golas eaten by the children.

Look at the information given above. Colour the line drawing of the golas appropriately.
Q1: Which colour ice gola do the children eat: 
(a) the most
(b) the least
Ans: (a) The most: Yellow colour ice gola
(b) The least: Blue colour ice gola 
How do you know?
I counted the golas for each colour. Yellow has the highest count (10), and blue has the lowest count (5).

Q2: Which colour gola would Anjali and Rohan have bought?
Ans: Anjali and Rohan would have bought the yellow colour gola because it is the most popular.

Q3: Which colour golas did boys eat the most?
Ans: Boys ate the most yellow colour golas. 

Q4: Which colour golas did girls eat the most?
Ans:  Yellow

Q5: Which of the ways of representing data did you use to answer these questions and why?
Ans: I used the pictures of golas to count how many of each colour were eaten by Rohan and Anjali. This way was easy because I could see and count the golas directly to find the most and least eaten colours.

Page no.  207 

 Activity - Chess or Cricket

Find out from your classmates how many of them play only chess, only cricket, both or neither.

Now let us organise the above data in the table.

Ans: Example done for students.

Answer these questions based on the data collected from your grade.

Q1: Who plays Chess the most? (Boys/Girls)
Ans: Add the number of children who play:

• Only Chess and
• Both Chess and Cricket

For Girls: 5 (only Chess) + 2 (both) = 7 girls 
For Boys: 3 (only Chess) + 5 (both) = 8 boys
So the answer is: Boys

Q2: Who plays Cricket the most? (Boys/Girls)
Ans: Add those who play:

• Only Cricket and
• Both games

For Girls: 4 + 2 = 6 girls
For Boys: 6 + 5 = 11 boys
So the answer is: Boys

Q3: How many children play both types of games?
Ans: Just add the “Both” row:

• Girls: 2
• Boys: 5

Total: 2 + 5 = 7 children

Page No. 208 

Bal Mela

Anjali and Rohan have recorded the number of people who ate fruit chaats and sandwiches in the Bal Mela over three days, using a Pictograph.

Let us Do

Q1: Complete the table.

Ans: 

Q2: On which day were the most sandwiches sold?
Ans: Day 3

Q3: Which item had the highest sale on Day 2?
Ans: Sales of fruit chaats on day 2 = 12
Sales of sandwiches on day 2 = 16
The difference in the sales of both items = 16 – 12 = 4.
Hence, sandwiches had the highest sale on day 2.

Q4: Complete the table given below. Circle the day that had the highest sales.
Ans: