NCERT Book Class 11 Informative Practices Understanding Data

Read and download the Chapter 5 Understanding Data PDF from the official NCERT Book for Class 11 Informatics Practices. Updated for the 2025-26 academic session, you can access the complete Informatics Practices textbook in PDF format for free.

NCERT Class 11 Informatics Practices Chapter 5 Understanding Data Digital Edition

For Class 11 Informatics Practices, this chapter in NCERT Book Class 11 Informative Practices Understanding Data provides a detailed overview of important concepts. We highly recommend using this text alongside the NCERT Solutions for Class 11 Informatics Practices to learn the exercise questions provided at the end of the chapter.

Chapter 5 Understanding Data NCERT Book Class Class 11 PDF (2025-26)

5.1 Introduction To Data

Many a time, people take decisions based on certain data or information. For example, while choosing a college for getting admission, one looks at placement data of previous years of that college, educational qualification and experience of the faculty members, laboratory and hostelfacilities, fees, etc. So we can say that identification of a college is based on various data and their analysis. Governments systematically collect and record data about the population through a process called census. Census data contains valuable information which are helpful is planning and formulating policies. Likewise, the coaching staff of a sports team analyses previous performances of opponent teams for making strategies. Banks maintain data about the customers, their account details and transactions. All these examples highlight the need of data in various fields. Data are indeed crucial for decision making.

In the previous examples, one cannot make decisions by looking at the data itself. In our example of choosing a college, suppose the placement cell of the college has maintained data of about 2000 students placed with different companies at different salary packages in the last 3 years. Looking at such data, one cannot make any remark about the placement of students of that college. The college processes and analyses this data and the results are given in the placement brochure of the college through summarisation as well as visuals for easy understanding. Hence, data need to be gathered, processed and analysed for making decisions.
In general, data is a collection of characters, numbers, and other symbols that represents values of some situations or variables. Data is plural and singular of the word data is “datum”. Using computers, data are stored in electronic forms because data processing becomes faster and easier as compared to manual data processing done by people. The Information and Communication Technology (ICT) revolution led by computer, mobile and Internet has resulted in generation of large volume of data and at a very fast pace. The following list contains some examples of data that we often come across.
• Name, age, gender, contact details, etc., of a person
• Transactions data generated through banking, ticketing, shopping, etc. whether online or offline
• Images, graphics, animations, audio, video
• Documents and web pages
• Online posts, comments and messages
• Signals generated by sensors
• Satellite data including meteorological data, communication data, earth observation data, etc.



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NCERT Book Class 11 Informatics Practices Chapter 5 Understanding Data

Download the official NCERT Textbook for Class 11 Informatics Practices Chapter 5 Understanding Data, updated for the latest academic session. These e-books are the main textbook used by major education boards across India. All teachers and subject experts recommend the Chapter 5 Understanding Data NCERT e-textbook because exam papers for Class 11 are strictly based on the syllabus specified in these books. You can download the complete chapter in PDF format from here.

Download Informatics Practices Class 11 NCERT eBooks in English

We have provided the complete collection of NCERT books in English Medium for all subjects in Class 11. These digital textbooks are very important for students who have English as their medium of studying. Each chapter, including Chapter 5 Understanding Data, contains detailed explanations and a detailed list of questions at the end of the chapter. Simply click the links above to get your free Informatics Practices textbook PDF and start studying today.

Benefits of using NCERT Class 11 Textbooks

The Class 11 Informatics Practices Chapter 5 Understanding Data book is designed to provide a strong conceptual understanding. Students should also access NCERT Solutions and revision notes on studiestoday.com to enhance their learning experience.

Where can I download the latest NCERT Book Class 11 Informative Practices Understanding Data in PDF for 2025-26?

You can download the latest, teacher-verified PDF for NCERT Book Class 11 Informative Practices Understanding Data for free on StudiesToday.com. These digital editions are updated as per 2025-26 session and are optimized for mobile reading.

Does this Informatics Practices book follow the latest NCERT rationalized syllabus?

Yes, our collection of Class 11 Informatics Practices NCERT books follow the 2026 rationalization guidelines. All deleted chapters have been removed and has latest content for you to study.

Why is it better to download NCERT Book Class 11 Informative Practices Understanding Data chapter-wise?

Downloading chapter-wise PDFs for Class 11 Informatics Practices allows for faster access, saves storage space, and makes it easier to focus in 2026 on specific topics during revision.

Are these NCERT books for Class 11 Informatics Practices sufficient for scoring 100%?

NCERT books are the main source for NCERT exams. By reading NCERT Book Class 11 Informative Practices Understanding Data line-by-line and practicing its questions, students build strong understanding to get full marks in Informatics Practices.