NCERT Solutions Class 6 Maths Chapter 4 Data Handling and Presentation

NCERT Solutions Class 6 for Maths Chapter 4 focuses on understanding data handling and its presentation through graphs and charts. This chapter helps students learn to organize, represent, and interpret data effectively. NCERT Solutions Class 6 for Maths Chapter will cover topics such as collecting data, arranging it in tables, and using pictographs/bar graphs to illustrate it. These skills are important for analyzing real-world information, such as survey results or weather reports.

NCERT Solutions Class 6 Maths - Chapter 4 Data Handling and Presentation offers thorough clarification and methodical answers to NCERT textbook problems. These are available in an easy-to-download PDF format. This resource covers all exercises, subtopics, and thorough answers to support students' learning and exam preparation.

1.0NCERT Class 6 Maths Chapter 4 Data Handling - Free PDF Download

In NCERT Solutions for Class 6 maths Chapter 4 are available in a free, downloadable PDF format. This ensures easy access to all the exercises and solutions, helping students revise and practice efficiently.

2.0Overview of Class 6 Maths Chapter 4 Data Handling and Presentation

Chapter 4 introduces Data Handling, teaching students how to collect, organize, and interpret data. Key concepts include understanding frequency, pictographs, and bar graphs, which are crucial for visual data representation.

3.0NCERT Class 6 Maths Chapter 4 Subtopics

Before knowing how the NCERT solutions help you in the preparation of the class 6 maths exam, you must know the subtopics under the chapter. These subtopics provide a comprehensive understanding of how data can be systematically arranged and visually presented. Following are the subtopics you will learn in this chapter:

• Collecting and organizing data
• Pictographs
• Bar graphs
• Artistic & Aesthetic Considerations

4.0Exercises Covered in NCERT Solutions Class 6 Maths Chapter 4

The exercises in Chapter 4 offer various problems to strengthen students' skills in handling data and creating visual representations like bar graphs. Solving problems helps students apply theoretical knowledge to practical situations. Below, we have provided a detailed table about the number of questions included in the NCERT solutions:

5.0NCERT Questions with Solutions Class 6 Maths Chapter 4 - Detailed Solutions

4.1 COLLECTING AND ORGANISING DATA

Naresh and Navya decided to go to each student in the class and ask what their favourite game is. Then they prepared a list. Navya is showing the list:

• What would you do to find the most popular game among Naresh's and Navya's classmates? Sol. To find the most popular game among Naresh's and Navya's classmates, I would tally the number of times each game is mentioned by their classmates. The game with the highest tally would be the most popular.
• What is the most popular game in their class? Sol. The most popular game in their class is Hockey.
• Try to find out the most popular game among your classmates. Sol. Cricket
• Pari wants to respond to the questions given below. Put a tick $[✓]$ for the questions where she needs to carry out data collection and put a cross $[\mathrm{X}]$ for the questions where she doesn't need to collect data. Discuss your answers in the classroom. a. What is the most popular TV show among her classmates? $✓$ b. When did India get independence? X c. How much water is getting wasted in her locality? $✓$ d. What is the capital of India? X

Shri Nilesh is a teacher. He decided to bring sweets to the class to celebrate the new year. The sweets shop nearby has jalebi, gulab jamun, gujiya, barfi, and rasgulla. He wanted to know the choices of the children. He wrote the names of the sweets on the board and asked each child to tell him their preference. He put a tally mark ' $\mid$ ' for each student and when the count reached 5 , he put a line through the previous four and marked it as $1\times N$.

• Complete the table to help Shri Nilesh to purchase the correct numbers of sweets:
  
  (a) How many students chose Jalebi? (b) Barfi was chosen by students? (c) How many students chose gujiya? (d) Rasgulla was chosen by students? (e) How many students choose Gulab Jamun? Sol. (a) 6 (b) 3 (c) $5+5+3=13$ (d) 7 (e) 9
• Is the above table sufficient to distribute each type of sweet to the correct student? Explain. If it is not sufficient, what is the alternative? Sol. No, it is not sufficient. Shri Nilesh should have also written children's names against each sweet item. Only then he could have given the right sweet to the right child.

Sushri Sandhya asked her students about the sizes of the shoes they wear. She noted the data on the board -

• Help her to figure out the following: Sol. The largest shoe size in the class is . The smallest shoe size in the class is . There are students who wear shoe size 5. There are students who wear shoe sizes larger than 4. Here let's make the frequency table.
  
  The largest shoe size in the class is 7. The smallest shoe size in the class is 3. There are 10 students who wear shoe size 5. There are 15 students who wear shoe sizes larger than 4.
• How did arranging the data in ascending order help to answer these questions? Sol. Let's arrange the data in ascending order: $3,3,3,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,6,6,6,6,7$ It takes a bit more time to answer as compared to the frequency table.
• Are there other ways to arrange the data? Sol. Yes, data can be arranged in descending order to find the largest values first, or grouped by frequency to quickly see the most common entries. Another method is grouping data into ranges, helping identify patterns or distributions across broader categories, making analysis more manageable and clear.
• Write the names of a few trees you see around you. When you observe a tree on the way from your home to school (or while walking from one place to another place). Record the data and fill in the following table:-

a. Which tree was found in the greatest number? b. Which tree was found in the smallest number? c. Were there any two trees found in the same numbers? Sol. It is an activity. Kindly do it yourself.

• Take a blank piece of paper and paste any small news item from a newspaper. Each student may use a different article. Now, prepare a table on the piece of paper as given below. Count the number of each of the letters ' $c$ ', ' $e$ ', ' $i$ 'i', 'r', and ' $x$ ' in the words of the news article, and fill in the table.

(a) The letter found the most number of times is (b) The letter found the least number of times is (c) List the five letters ' $c$ ', ' $e$ ', ' i ', ' r ', ' x ' in ascending order of frequency. Now, compare the order of your list with that of your classmates. Is your order the same or nearly the same as theirs? (Almost everyone is likely to get the order ' $\mathrm{x},\mathrm{c},\mathrm{r},\mathrm{i},\mathrm{e}$ '). Why do you think this is the case? (d) Write the process you followed to complete this task. (e) Discuss with your friends the processes they followed. (f) If you do this task with another news item, what process would you follow? Sol. It is an activity. Kindly do it yourself.

4.2 PICTOGRAPHS

• The following pictograph shows the number of books borrowed by students, in a week, from the library of Middle School, Ginnori-
  
  
  a. On which day were the minimum number of books borrowed? b. What was the total number of books borrowed during the week? c. On which day were the maximum number of books borrowed? What may be the possible reason? Sol. (a) Thursday (b) Total number of books borrowed $=5+4+2+0+5+8=24$ books. (c) Saturday As the next day is the school holiday, they would have enough time to read the books.
• Magan Bhai sells kites at Jamnagar. Six shopkeepers from nearby villages come to purchase kites from him. The number of kites he sold to these six shopkeepers are given below-

Prepare a pictograph using the symbol to represent 100 kites. Answer the following questions: a. How many symbols represent the kites that Rani purchased? b. Who purchased the maximum number of kites? C. Who purchased more kites, Jasmeet or Chaman? d. Rukhsana says Poonam Ben purchased more than double the number of kites that Rani purchased. Is she correct? Why? Sol.

4.3 Bar Graphs

• How many total cars passed through the crossing between 6 am and noon? Sol. Total cars passed $=600+700+800+1000+1200+150=4450$ cars
• Why do you think so little traffic occurred during the hours of 6-7 am, as compared to the other hours from 7 am to noon? Sol. The traffic that occurs during the hours 6-7 am is very little, as it is early morning time and there are very few office goers.
• Why do you think the traffic was the heaviest between 7 am and 8 am? Sol. 7-8 am is the hour when the maximum number of factory officers and workers use their cars and parents use their cars to drop their children at school.
• Why do you think the traffic was lesser and lesser each hour after 8 am until noon? Sol. Because, most of the schools start at 8 am and many factories also start at 8 am and hence less traffic between 8 am-9 am. Most offices start at 9 am and shops start at 10 am and hence less traffic between 9 am-10 am.

4.4 DRAWING A BAR GRAPH

• Samantha visited a tea garden and collected data of the insects and critters she saw there. Here is the data she collected-
  
  Help her prepare a bar graph representing this data. Sol.
  
• Pooja collected data on the number of tickets sold at the Bhopal railway station for a few different cities of Madhya Pradesh over a 2-hour period.

She used this data and prepared a bar graph on the board to discuss the data with her students, but someone erased a portion of the graph.

(a) Prepare a frequency distribution table for the data. (b) Which means of transport was used the most? (c) If you were there to collect this data, how could you do it? Write the steps or process.

Sol. (a)

I will use a tally chart or counting app to record the type of transport passing by during that hour.

Categorisation

I will organise the data into categories (e.g., bike, car, scooter, bus, etc.).

Final Count

After the observation period, I will get the total number of occurrences for each category.

Analysis

Finally, I will prepare a frequency distribution table based on the recorded data for analysis.

• Roll a die 30 times and record the number you obtain each time. Prepare a frequency distribution table using tally marks. Find the number that appeared: a. The minimum number of times. b. The maximum number of times. c. Find numbers that appeared an equal number of times. Sol. Let the outcomes of 30 times roll of a die be 6, 2, 3, 5, 6, 4, 1, 1, 2, 5 $3,4,1,1,3,5,2,2,1,1$ $6,2,3,5,1,2,2,3,4,2$
  
  a. The minimum number of times: 4 and 6 b. The maximum number of times: 2 c. The numbers that appeared an equal number of times: 4 and 6 . This is an activity. So, you can also perform it yourself and prepare 9 frequency table.
• Faiz prepared a frequency distribution table of data on the number of wickets taken by Jaspreet Bumrah in his last 30 matches:

a. What information is this table giving? b. What may be the title of this table? c. What caught your attention in this table? d. In how many matches has Bumrah taken 4 wickets? e. Mayank says "If we want to know the total number of wickets he has taken in his last 30 matches, we have to add the numbers $0,1,2,3\dots$, up to 7 ." Can Mayank get the total number of wickets taken in this way? Why? f. How would you correctly figure out the total number of wickets taken by Bumrah in his last 30 matches, using this table? Sol. (a) The information in the table gives an overview of the number of matches in which he took wickets from 0 to 7. (b) Frequency distribution table indicating the bowling performance of Jaspreet Bumrah. (c) Bumrah has taken 3 or more wickets in most of the matches. (d) Three matches (e) No (f) He can get the correct total, by adding the following points. $\begin{array}{rl}& (2\times 0)+(4\times 1)+(6\times 2)+(8\times 3)+(3\times 4)+(5\times 5)+(1\times 6)+(1\times 7)\\ & =0+4+12+24+12+25+6+7=90\end{array}$

• The following pictograph shows the number of tractors in five different villages.
  
  Observe the pictograph and answer the following questions- a. Which village has the smallest number of tractors? b. Which village has the most tractors? c. How many more tractors does Village C have than Village B? d. Komal says, "Village D has half the number of tractors as Village E." Is she right? Sol. a. Village D b. Village C c. 3 more tractors d. Yes
• The number of girl students in each class of a school is depicted by a pictograph:
  
  Observe this pictograph and answer the following questions: a. Which class has the least number of girl students? b. What is the difference between the number of girls in Class 5 and 6? c. If 2 more girls were admitted in Class 2, how would the graph change? d. How many girls are there in Class 7? Sol. (a) Class 8 (b) Number of Girls in class $6=4\times 4=16$ Number of Girls in class $5=4\times 2.5=10$ Hence difference $=16-10=6$ (c) Five full symbols of a girl (d) $3\times 4=12$ girls.
• Mudhol Hounds (a type of breed of Indian dogs) are largely found in North Karnataka's Bagalkote and Vijaypura districts. The government took an initiative to protect this breed by providing support to those who adopted these dogs. Due to this initiative, the number of these dogs increased. The number of Mudhol dogs in six villages of Karnataka are as follows- Village A : 18, Village B : 36, Village C : 12, Village D : 48, Village E : 18, Village F : 24 Prepare a pictograph and answer the following questions: a. What will be a useful scale or key to draw this pictograph? b. How many symbols will you use to represent the dogs in Village B? c. Kamini said that the number of dogs in Village B and Village D together will be more than the number of dogs in the other 4 villages. Is she right? Give reasons for your response. Sol.

(a) * $=6$ dogs will be a useful scale or key to draw this pictograph. (b) 6 symbols. (c) Yes, because Total no. of dogs in villages B and D $=6+8=14$ Symbols $=14\times 6=84$ dogs Total no. of dogs in remaining 4 villages $=3+2+3+4=12$ Symbols $=12\times 6=72$ dogs

• A survey of 120 school students was conducted to find out which activity they preferred to do in their free time.

Draw a bar graph to illustrate the above data taking the scale of 1 unit length $=5$ students. Which activity is preferred by most students other than playing? Sol.

• Students and teachers of a primary school decided to plant tree saplings in the school campus and in the surrounding village during the first week of July. Details of the saplings they planted are as follows-
  
  a. The total number of saplings planted on Wednesday and Thursday is . b. The total number of saplings planted during the whole week is . c. The greatest number of saplings were planted on , and the least number of saplings were planted on . Why do you think that is the case? Why were more saplings planted on certain days of the week and less on others? Can you think of possible explanations or reasons? How could you try and figure out whether your explanations are correct? Sol. (a) $30+40=70$ saplings (b) $52+40+30+40+50+60+40=312$ saplings (c) Saturday, Wednesday.
• The number of tigers in India went down drastically between 1900 and 1970. Project Tiger was launched in 1973 to track and protect tigers in India. Starting in 2006, the exact number of tigers in India was tracked. Shagufta and Divya looked up information about the number of tigers in India between 2006 and 2022 in 4-year intervals. They prepared a frequency table for this data and a bar graph to present this data, but there are a few mistakes in the graph. Can you find those mistakes and fix them?

• No. of tigers in 2006 was 1400 but shown less in the graph.
• No. of tigers in 2014 was 2200 but shown more in the graph.
• No. of tigers in 2018 was 3000 but shown less in the graph.

4.5 ARTISTIC AND AESTHETIC CONSIDERATIONS

• If you wanted to visually represent the data of the heights of the tallest persons in each class in your school, would you use a graph with vertical bars or horizontal bars? Why? Sol. Graph with vertical bars. Vertical graphs are like pillars and show a much better presentation of the person's height.
• If you were making a table of the longest rivers on each continent and their lengths, would you prefer to use a bar graph with vertical bars or horizontal bars? Why? Try finding out this information, and then make the corresponding table and bar graph! Which continents have the longest rivers? Sol. Graph with horizontal bars, because rivers flow on land horizontally.
  
  According to graph, Nile, Yangtze and Amazon are some of the examples of longest rivers in the world.

6.0How to Prepare with the Help of NCERT Solutions

Using NCERT Solutions for Class 6 Maths Chapter 4 can improve your understanding of data handling. The NCERT solutions for class 6 maths help you to prepare for the exam in the following ways:

• Understand the Basics: NCERT solutions provide detailed explanations, which you can use to clarify any doubts you have about the basic concepts of data handling and presentation.
• Practice Exercises Regularly: NCERT solutions reinforce your understanding by providing different exercises. These problems strengthen your analytical and problem-solving skills.
• Use Visual Aids: For better retention of information, you must practice the bar graphs and pictographs. NCERT solutions provide examples that you can use to practice and improve your graphing skills.
• Apply Real-Life Examples: Connect the ideas to actual circumstances, such as analyzing survey data or weather reports. This helps in better understanding and makes learning data handling more relatable and practical.
• Revise and Review: Go over the solutions to review your answers and understand any mistakes. This will ensure you are confident with the concepts and well-prepared for exams.