## CBSE Revision Notes Class 8 Maths Chapter 5: Data Handling

CBSE Revision Notes Class 8 Maths Chapter 5 Data Handling are provided to help the students understand and revise the concepts right from the beginning. The concepts taught in Class 8 are important to be understood as these concepts are continued in classes 9 and 10. To score good marks in Class 8 mathematics examination, it is advised to solve questions provided in the Revision Notes Class 8 Maths Chapter 5. These revision notes for Class 8 Maths help the students to revise all the concepts in a better way.

**Swiflearn** provides Revision Notes and keynotes chapter wise for the CBSE board exam in an easy-to-understand, free downloadable PDF format so students can use it for their studies and score better in their board exams. The CBSE Class 8 Revision Notes are made for the main subjects of Science and Maths. These core subjects are very critical as they are the stepping stones and plays a crucial role in student’s future. They might be tricky for students. The CBSE Class 8 Revision Notes for each chapter will enable them to have an expert studying pattern with which they can enjoy learning the subject and perform better in the exams.

CBSE Class 8 Maths Revision Notes are designed keeping in my mind the exam pattern and syllabus of NCERT 2020-21. Students can download the PDF for free and practice the questions to score well in the coming exams.

## CBSE Revision Notes Class 8 Maths Chapter 5: Data Handling

## Organizing and representing data:-

**What is raw data?**

Most of the available data is raw data. Raw data can be arranged systematically in order to draw meaningful inferences.

**What is frequency?**

Frequency gives the number of times a particular entry occurs. The table that shows the frequency of different objects is called a frequency distribution table.

**Grouped frequency distribution table:-**

The table shows a grouped frequency distribution.

Each of the groups 0-10, 10-20, etc. is called a class interval.

The lower number in each class interval is known as the lower class limit.

The upper number in each class interval is known as the upper class limit.

The difference between the upper and the lower class limit is known as the width or size of the class interval.

The common observation between each class interval belongs to the higher class (e.g., 20 will belong to 20-30 and not to 10-20).

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