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RS Aggarwal Solution For Class 7 Maths Chapter 21 Collection and Organisation of Data - Free PDF Download

Q: 1. Define the following terms: Data, Raw Data, Array, Tabulation of Data, Observation, Frequency of an observation, Statistics?

Data: It is a collection of numerical figures giving some information.Raw Data: It is the data obtained in the original form.Array: It is the arrangement of the numerical figures of data in either ascending or descending order.Tabulation of Data: It is the arrangement of the data systematically in tabular form. Observation: It refers to each numerical figure in the data.Frequency of an Observation: It is the number of times a particular observation occurs.Statistics: It is the subject that talks about the collection, presentation, analysis, and interpretation of numerical data.

RS Aggarwal Solutions

RS Aggarwal Solution For Class 7 Maths Chapter 21 Collection and Organisation of Data - Free PDF Download

RS Aggarwal Class 7 Chapter 21 Solutions: Free PDF Download

To have a strong foundation for Class 10 Maths Board examinations, one needs to start building concepts right from Class 7. Mathematics could be a slightly tricky subject for some. With the RS Aggarwal Class 7 Maths Chapter 21 solutions prepared by the experts at Vedantu, students will find it easy and exciting to prepare for exams. The RS Aggarwal Class 7 Chapter 21 “Collection and Organisation of Data” solutions free pdf provided by Vedantu contains answers to every question present in this chapter. The in-depth understanding that the students will imbibe through these solutions will prepare them to attempt even complex examination problems.

Every NCERT Solution is provided to make the study simple and interesting on Vedantu. You can also register Online for NCERT Class 7 Science and NCERT Maths Class 7 tuition on Vedantu.com to score more marks in your examination.

Download RS Aggarwal Class 7 Chapter 21 Solutions: Free PDF

The solutions are available in a free downloadable pdf format on Vedantu official website. These solutions of RS Aggarwal Class 7 Maths Ch 21 are according to the latest CBSE curriculum. Vedantu aims to make the learning experience convenient for students. With this free availability of the material in PDF format, the students can use it for doing a quick revision without any need for internet connection.

Introduction to Class 7 Maths Chapter 21 : Collection and Organisation of Data

Before we proceed with the Maths RS Aggarwal Chapter 21 Class 7 “Collection and Organisation of Data” solutions, it is vital to understand the basic terms involved in this chapter:

Mean: A Mean is calculated by dividing the sum of all the numbers by the total number present. This calculation will give you the Mean or average of all the numbers.
Median: A Median is a middle number of the series, and you can calculate it by using the formula present in the PDFs.
Mode: A Mode talks about the number of times a number appears in a series.

RS Aggarwal Class 7 Maths Chapter 21 Solutions to Exercises

RS Aggarwal Class 7th Maths Chapter 21 is based on the concepts of Mean, Median and Mode. It is one of the most straightforward chapters of Class 7 Maths subject and can help students score high marks in their exams. The chapter Collection and Organisation of Data covers three exercises based on Mean, Median and Mode respectively, and below is the detailed explanation of all the exercises of this chapter:

All the Exercise questions with solutions in Chapter-21 Collection and Organisation of Data (Mean, Median and Mode) are given below:

Exercise (Ex 21A) 21.1

Exercise (Ex 21A) 21.2

Exercise (Ex 21A) 21.3

Exercise 21.1

This exercise contains 14 questions related to the basics of Mean along with one line questions. It also talks about the basic concepts of making frequency tables. A frequency table is prepared by arranging the numbers in a descending or ascending order and accordingly making a table of the number of times that digit was repeated. It requires focus and concept understanding to avoid any mistake in frequency calculation.

With RS Aggarwal Maths Solution of Class 7 Chapter 21 Exercise 21.1, you will get answers to all the questions in this exercise. It will also give you an understanding of making a frequency table and calculating the mean of the values.

Exercise 21.2

This exercise focuses on calculating the Median,. It covers different calculus methods and formulas to find out the median. The formula is given in the pdf so that every student learns it.

This exercise can be tricky as it contains some new formulas and students need to get a hold of them. Through RS Aggarwal Solutions Class 7 Chapter 21 Exercise 21.2, the students can get hold of all the formulas and methods to solve the problems.

Exercise 21.3

This is a short exercise covering only two questions based on the calculation of Mode. The question asks the students to arrange the number in ascending and descending order to calculate the mode.

RS Aggarwal Solution of Chapter 21 Exercise 21.3 helps students enhance their problem-solving capabilities by thoroughly understanding the concept.

Preparation Tips for RS Aggarwal Class 7 Maths Chapter 21

While preparing RS Aggarwal Class 7 concept Mean Median Mode; it is essential to remember the below tips:

The first step is to understand the meaning of basic terms like mean, median, mode, data, frequency, etc.
Learn to prepare a frequency table.
Understand all the formulas thoroughly.
Having fine knowledge of ascending and descending numbers is mandatory.

These tips will help you to resolve all the solutions to the questions based on the concept of mean, median, and mode at no time.

About RS Aggarwal Class 7 Solutions

RS Aggarwal solutions are based on simple methods of learning, they aim at making the learning process easier and smoother for all students across all grades. This book bridges the gap to complete the CBSE board syllabus and meet all the demands that a student would need to excel in their examination, tests or school. These solutions are not only easier to understand, but they are also designed in such a way that it's easier to recall them in tests and examinations.

When talking about the importance of these notes, we can safely say that they are pretty useful as you wouldn't need the internet to access them, after downloading them and you can refer to them whenever the need arises offline. The most important part is that these notes are self-explanatory and you wouldn't have to wonder how a certain conclusion was suddenly reached as the entire step-by-step process will be mentioned.

Interrelation Between the Notes and the RS Aggarwal Chapter 21:

As we already know the importance and functionality of the notes, let's see how they might come of use in this particular chapter. The chapter ‘collection and organisation of data is already easy, but to make it even simpler and to be efficiently understood, these notes have many easily executed solutions which might help certain students who are finding it hard to understand sections of the chapter.

The chapter covers the concepts of mean, median and mode. These are easy concepts that may help you score well in your exams and will also make you understand the data around you better. These are key concepts to any business or work as we collect data almost everywhere. Once you understand this chapter well, you don't need to worry as these concepts are going to help ace your tests and examinations with ease.

With the help of these notes available on Vedantu, you are bound to get good grades, understand your concepts more efficiently and score well in exams.

This chapter is absolutely easy to understand, as we’ve talked about and RS Aggarwal notes make it very easy for all the students to gain learning efficiently. The aim is to set up class 7 students well for upcoming standards they go to and how this chapter will be useful to them in many ways in the future. We highly appreciate RS Aggarwal class 7 notes because once you start learning, you will see how precise the notes are. They will be easy for your brain to consume without draining you of your will to study and learn.

FAQs on RS Aggarwal Solution For Class 7 Maths Chapter 21 Collection and Organisation of Data - Free PDF Download

1. Define the following terms: Data, Raw Data, Array, Tabulation of Data, Observation, Frequency of an observation, Statistics?

Data: It is a collection of numerical figures giving some information.
Raw Data: It is the data obtained in the original form.
Array: It is the arrangement of the numerical figures of data in either ascending or descending order.
Tabulation of Data: It is the arrangement of the data systematically in tabular form.
Observation: It refers to each numerical figure in the data.
Frequency of an Observation: It is the number of times a particular observation occurs.
Statistics: It is the subject that talks about the collection, presentation, analysis, and interpretation of numerical data.

2. What are the advantages of RS Aggarwal Maths Solutions of Class 7 Chapter 21?

All the solutions are prepared by Maths experts of Vedantu, who hold experience of at least fifteen years.
Solutions come with easy and simple explanations so that students can understand the concepts clearly.
Each chapter includes explanations and practice questions.
Availability of free PDF makes it even easier for the students to learn at their own pace.

3. What does RS Aggarwal Class 7 Chapter 21 Solution free pdf contain?

RS Aggarwal Class 7 Chapter 21 free pdf contain many solutions to problems that are considered hard in this chapter. The solutions in the pdf are explained in such a way that the student will learn them pretty well and in a fun way that doesn't drain them. These solutions are also self-explanatory and self-sufficient so you don't need the help of any outside source to understand them. Going through this material will help students understand concepts deeper and how to approach questions based on these concepts.

4. How can I access RS Aggarwal Class 7 Chapter 21 Solutions free pdf?

Vedantu helps you to easily access RS Aggarwal Class 7 Chapter 21 solutions. You just have to visit Vedantu’s official website, find these notes and download them. It's a simple process and won't require any outside assistance or even a lot of time. You can do it on your own whenever you want to and on any device you want. Once downloaded, accessing them through your device without the need for the internet is also smooth. If you misplace it, repeating the same process and downloading the PDF again would restore it.

5. What is meant by mean, median and mode?

Mean, median and mode are three ways of giving average values of a list of numbers. As we continue to study in further classes, we learn that there are different subtypes of means and there are also more uses of these three topics than what we initially learned. These are helpful concepts that you might find useful in many parts of life and you can apply them for easy accessibility.

6. Is it important to learn these topics in Class 7?

Apart from all the applications of these concepts in real life, this chapter holds a lot of importance in examinations and hence when you know this chapter, your marks will improve and you will also be able to solve other chapters because this one is interrelated to many of them in small ways which will ultimately save your time during examinations, tests and other times when you need them.

7. How much time should I allocate to learning this chapter?

This is a versatile chapter so you don't have an average time or ideal time that you should allot to this chapter, but you can take as much time as you want with it as you can give it. As it will be a one-time learning process, once you understand this chapter, you won't need to revise it again and again, so it's good in exchange for all the time you'll be putting into it. Do not worry, as learning, with the help of RS Aggarwal notes will not be that hard or time-consuming. You will pass through it seamlessly while enjoying learning.