# NCERT Solutions for Class 7 Maths Chapter 3 Data Handling (EX 3.2) Exercise 3.2

Chapter 3 of Class 7 Mathematics is on Data Handling. Data handling, which handles issues like security, confidentiality, and the preservation of research data, is a crucial topic in Statistics that maintains the accuracy of the study data. Information in the form of a numerical value is available in every field. Every such figure is regarded as an observation. “Data” is the general term used to describe the collection of all observations. Statisticians use a variety of data management techniques to handle the data.

Students often consider Mathematics to be challenging. Students must practice many questions to make these concepts concise and simple to learn. Furthermore, consistency is necessary for a thorough comprehension of Mathematics. To be properly prepared for these exams, students must answer questions with varying levels of complexity. They should begin the chapter by answering easy questions before progressively moving on to those that call for them to employ their critical thinking and reasoning abilities.

Students should be prepared to answer a variety of questions because they will likely see more questions in exams that require analytical thinking. They will be able to complete questions within the time limit with enough practice. The NCERT is recommended for students to read to prepare for Class 7 Mathematics.

NCERT questions are the most significant resource for Class 7 School Examinations. NCERT questions provide students with an overview of the types of questions they could face in exams. NCERT exercises include questions of varying difficulty. Students should practice NCERT questions because questions in CBSE examinations and school term-end exams are sometimes quite similar to NCERT exercises. If students have trouble solving the NCERT exercises or want to find simple solutions, they can use the study resources provided by Extramarks. The materials from Extramarks are trustworthy and reliable. NCERT practice questions can also assist students in preparing for competitive exams. To prepare for NCERT Class 7 Maths Chapter 3 Exercise 3.2, students should use NCERT solutions provided by Extramarks. With the help of the solutions provided by Extramarks, students will be able to study effectively. Class 7 Maths Exercise 3.2 can be solved easily with the help of the resources offered by Extramarks. The NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2 are written in a step-by-step format to help stdents understand.

## NCERT Solutions for Class 7 Maths Chapter 3 Data Handling (EX 3.2) Exercise 3.2

Data Handling is the topic of Chapter 3 of Class 7 Mathematics. To ace Mathematics, students must practice a lot of questions. Students can practice the questions of Class 7 Chapter 3 Exercise 3.2 from the NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2. The NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2, are offered by Extramarks for the benefit of students. Students can download the NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2 from the website and mobile application of Extramarks. The NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2, can be downloaded in PDF format for offline access.

With the help of the NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2 students will be able to solve the Class 7 Maths Chapter 3 Exercise 3.2 thoroughly. These NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2 can help students to self-study and enhance their Mathematics skills.

## Access NCERT Solutions for Class 7 Mathematics Chapter 3 – Data Handling

Students can access the NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2, from the website and mobile application of Extramarks. Students are advised to download the NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2, in PDF format. The NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2, will help students score well in the exams. For effective preparation, students should download the NCERT Solutions for Class 7 Maths Chapter 3 Exercise 3.2.

### Class 7 Maths Chapter 3 Exercise 3.2 Solutions

Exercise 3.2 from Class 7 Maths Chapter 3 covers all the basic principles of Data Handling. Students will lay a solid basis for data handling by effectively learning Exercise 3.2 class 7. Significant concepts like Mean, Mode, Median, and Mode of Large Data are covered. This chapter also covers other significant topics like Data Collection, Data Organisation, Arithmetic Mean, Bar Graph Usage for Different Purposes, Double Bar Graph Construction, and Scale Selection. Probability is also an important part of this chapter.

In the previous exercise, students learn how to calculate the mean, in this exercise students will learn how to compute both the median and the mode in this exercise. The fundamentals of data handling—Mean, Median, and Mode—should be understood by students.

Students must fully comprehend these three concepts since they will be crucial to understanding the rest of the curriculum, particularly for those students who plan to continue studying the subject in the future. With the help of NCERT Solutions for Class 7 Maths Chapter 3 Exercise 3.2, students can learn more about these concepts and lay the groundwork for future statistical studies.

### NCERT Solutions for Class 7

In Class 7, students are introduced to various new and fascinating concepts. The knowledge gained in Class 7 is very useful for students throughout their lives. Students in Class 7 study a variety of subjects. Mathematics, Social Science, Science, English, and Hindi/Sanskrit are the core subjects of Class 7. Students must give each subject in Class 7 the same amount of attention because they are all highly important. The study resources provided by Extramarks can be used by students to prepare for all the subjects. Extramarks provides resources such as NCERT solutions, past years’ papers, and revision notes. Students must use the provided resources to improve their Class 7 scores. The resources on Extramarks are really helpful for self-studying. The Extramarks resources are highly trustworthy. The resources offered by Extramarks are proofread regularly to avoid any errors. Additionally, the resources are consistently updated to follow the most recent CBSE rules.

For Class 7, students must prepare well. If students adequately prepare for Class 7, they will be better able to comprehend the essential concepts of the major disciplines in the future. If students have a firm grasp of the subjects in Class 7, they can study effectively in higher classes. All practice problems and the extracurricular activities listed in the NCERT textbooks for Class 7 must be completed by students. This will enable students to gain useful subject knowledge. For Exercise 3.2 of Chapter 3, students can use the Class 7 Maths Chapter 3 Exercise 3.2 Solutions offered by Extramarks. Students can enhance their scores by using study materials offered by Extramarks.

Q.1 The scores in mathmatics test (out of 25) of 15 students is as follows:
19, 25, 23, 20, 9, 20, 15, 10, 5, 16, 25, 20, 24, 12, 20
Find the mode and median of this data, are they same?

Ans.

$\begin{array}{l}\text{Arranging the score in ascending order.}\\ \text{5,9,10,12,15,16,19,20,20,20,20,23,24,25,25}\\ \text{Since, mode is that value of observation which occurs for}\\ \text{the most number of time and median is the middle observation.}\\ \text{There are 15 values, so median would be the 8th observation}\\ \text{and 20 occurs 4 times.}\\ \text{So,}\overline{)\text{Mode}=\text{20\hspace{0.17em}and Median}=\text{20}}\\ \text{Yes both are same.}\end{array}$

Q.2

$\begin{array}{l}\text{The runs scored in a cricket match by 11 players is}\\ \text{as follows:}\\ \text{6,15,120,50,100,80,10,15,8,10,15}\\ \text{Find the mean, mode and median of this data.}\\ \text{Are the three same?}\end{array}$

Ans.

$\begin{array}{l}\text{Arranging in ascending order to get}\\ \text{6,8,10,10,15,15,15,50,80,100,120}\\ \text{Mean}=\frac{6+8+10+10+15+15+15+50+80+100+120}{11}\\ \text{}\text{\hspace{0.17em}}\text{\hspace{0.17em}}=\frac{429}{11}=\overline{)39}\\ \text{Mode is that value of observation which occurs for the most}\\ \text{number of time and median is the middle observation}\text{.}\\ \text{There are 11 values, so median would be the 6th observation}\\ \text{and 15 occurs 3 times}\text{.}\\ \text{So,}\overline{)\text{Mode}=\text{15}\text{\hspace{0.17em}}\text{and Median}=\text{15}}\\ \text{No, these three are not same}\text{.}\end{array}$

Q.3

$\begin{array}{l}\text{The weights }\left(\text{inkg.}\right)\text{of 15 students of a class are :}\\ \text{38,42,35,37,45,50,32,43,43,40,36,38,43,38,47}\\ \left(\text{i}\right)\text{Find the mode and median of this data.}\\ \left(\text{ii}\right)\text{Is there more than one mode?}\end{array}$

Ans.

$\begin{array}{l}\text{Arranging the weight in ascending order}\text{.}\\ \text{32,35,36,37,38,38,38,40,42,43,43,43,45,47,50}\\ \text{Mode of given data is that value of observation which occurs for}\\ \text{the most number of time and median is the middle observation}\text{.}\\ \text{There are 15 values, so median would be the 8th observation}\\ \text{So, Median}=\overline{)\text{40}}\\ \text{Also 38 and 43 both occurs 3 times}\text{.}\\ \text{So,}\overline{)\text{Mode}=\text{38}\text{\hspace{0.17em}}\text{and 43}}\\ \text{Yes there are two mode for given data}\text{.}\end{array}$

Q.4 Find the mode and median of the data:
13, 16, 12, 14, 19, 12, 14, 13, 14

Ans.

$\begin{array}{l}\text{Arrange in ascending order to get:}\\ \text{12,12,13,13,14,14,1416,19}\\ \text{Mode of given data is that value of observation which occurs for}\\ \text{the most number of time and median is the middle observation}\text{.}\\ \text{There are 9 values, so median would be the 5th observation}\\ \text{So, Median}=\overline{)\text{14}}\\ \text{Also 14 occurs 3 times}\text{.}\\ \text{So,}\overline{)\text{Mode}=\text{14}}\end{array}$

Q.5

$\begin{array}{l}Tellwhetherthestatementistrueorfalse:\\ \left(i\right)Themodeisalwaysoneofthenumbersinadata.\\ \left(ii\right)Themeancanbeoneofthenumbersinadata.\\ \left(iii\right)Themedianisalwaysoneofthenumbersinadata.\\ \left(iv\right)Adataalwayshasamode.\\ \left(v\right)Thedata6,4,3,8,9,12,13,9hasmean9.\end{array}$

Ans.

$\begin{array}{l}\text{(i)}\overline{)\text{True}}\text{, because mode is the value that occurs most of}\\ \text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{the time and it belongs to the given data}\text{.}\\ \text{(ii)}\overline{)\text{False}}\text{, Mean may or may not belong to the data}\text{.}\\ \text{(iii)}\overline{)\text{True}}\text{, because median is the middle observation}\\ \text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{of given data}\text{.}\\ \text{(iv)}\overline{)\text{False}}\\ \text{The given data is: 6,4,3,8,9,12,13,9}\text{.}\\ \text{So, Mean}=\frac{6+4+3+8+9+12+13+9}{8}\\ \text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{\hspace{0.17em}}=\frac{64}{8}\\ \text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{\hspace{0.17em}}\text{\hspace{0.17em}}=8\end{array}$

## 1. Is Class 7 Mathematics tough?

Class 7 indeed has an increased difficulty level in all subjects, but students can make it easier for themselves by studying regularly and practising NCERT exercises. Class 7 Mathematics must also be prepared in this manner. Students can solve NCERT exercises with the help of resources provided by Extramarks. To solve the questions of Chapter 3 Class 7 Exercise 3.2, students can take the help of the NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2.

## 2. From where can students download the NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2?

Students can download the  NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2 from the website and mobile application of Extramarks.

## 3. Can the NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2 be downloaded in PDF format?

Yes, the NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2 are available in PDF format. Students are advised to download the NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2 in PDF format for easy access.

## 4. Will the NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2 help students to solve mock papers?

Yes, the NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2 will help students in solving the mock examination questions. They can also refer to Extramarks’ past years’ papers to find authentic solutions. Students must download the  NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2 for preparing chapter 3 Exercise 3.2 efficiently.

## 5. Is Extramarks study material reliable?

Yes, the study resources provided by Extramarks are reliable and authentic. The study resources provided by Extramarks cover the whole syllabus holistically and can be used by students to prepare for their exams. Further, the study materials are updated regularly according to the latest CBSE guidelines.

## 6. Do the NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2 contain solutions for all exercise questions of Chapter3 Class 7 Mathematics?

The NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2 contain solutions for Exercise 3.2 of Chapter 3. For the solutions to other exercises of Chapter 7, students can visit the website and mobile application of Extramarks.

## 7. Are the NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2 useful for preparing for competitive exams?

Yes, candidates preparing for various competitive exams can also make use of the NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2. They must download the NCERT Solutions For Class 7 Maths Chapter 3 Exercise 3.2 in PDF format for easy access.