## Revision Notes for CBSE Class 8 Maths Chapter 4 - Free PDF Download

## FAQs on Data Handling Class 8 Notes CBSE Maths Chapter 4 (Free PDF Download)

1. What is a histogram according to Revision Notes of Chapter 4 of Class 8 maths?

Ans. The histogram is a type of bar graph used to represent grouped data. In a histogram, the horizontal axis denotes the class intervals while the vertical axis shows the frequency of the class interval. The vertical bars do not have any gap between them as there is no gap in the class intervals. A class interval is a grouped data having a lower and an upper limit which is represented on the horizontal axis of a histogram. Learn more about histograms on Vedantu. The solutions and notes provided BY Vedantu are available on Vedantu website as well as Vedantu Mobile app, free of cost.

2. What is grouping data according to Revision Notes of Chapter 4 of Class 8 maths?

Ans. The data that is present in an unorganized form is called raw data. To make it meaningful, it is grouped systematically. While grouping data, the number of times a particular entry is repeated which is called its frequency is calculated. A frequency distribution table shows the number of times an entry occurs. However, when large amounts of data are present, the data is formed into groups and the data presented in this way is said to be grouped.

3. How can data be represented according to Revision Notes of Chapter 4 of Class 8 maths?

Ans. In the Chapter 4 of Class 8 titled Data Handling, students will learn the following methods of data representation-

Tally marks- Using tallies to mark each entry of occurrence

Pictogram- Data is represented using pictures as symbols

Bar diagram- Use of bars of uniform width and different heights to represent their different values

Histograms- Bar diagrams but no gaps in the class intervals in the horizontal axis

Pie charts- It is shown as a circle and is divided into sectors.

4. From where can I download the free Chapter 4 Solutions of Class 8 Maths?

Ans. Follow the given below steps to download Chapter 4 Solutions of Class 8 Maths.

Visit the official website of Vedantu (vedantu.com).

Select the desired class and subject.

Select the chapter of your choice.

You will notice ‘Download PDF’ option

Click on it and the solutions will get downloaded on your computer or any other device.

5. How can I use these revision notes for Class 8 maths Data Handling?

Ans. You can access these notes online on Vedantu’s website to check how the experts have simplified the concepts to imbibe such skills to become better at solving the problems of this chapter.