NCERT Book Class 11 Informative Practices Understanding Data

Informatics Practices
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Read Chapter 05 Understanding Data of NCERT Class 11 Informatics Practices

Explore the complete NCERT textbook for Class 11 Informatics Practices. Tailored for the 2026-27 curriculum, this resource breaks down complex topics to help students prepare effectively for school examinations.

Chapter 05 Understanding Data PDF Resource

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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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Official NCERT Textbook PDF: Class 11 Informatics Practices Chapter 05 Understanding Data

NCERT Book Class 11 Informatics Practices Chapter 05 Understanding Data

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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.

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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.