Class 6 Maths Chapter 4 Data Handling and Presentation Revision Notes

Quick revision notes for Class 6 Maths Chapter 4, “Data Handling and Presentation” — key definitions and facts at a glance for fast last-minute review. These Class 6 Mathematics Chapter 4 notes are ideal for quick revision just before exams.

Key Terms

• Data: a collection of information/observations.
• Raw data: data before it is organised.
• Tally marks: strokes used to count, grouped in bundles of 5 (four straight + one diagonal).
• Frequency: how many times a value occurs.
• Frequency distribution table: a table listing values with their frequencies.

Pictographs

• Represent data using symbols/pictures.
• A key/scale shows what quantity one symbol represents.
• Partial symbols can represent fractional quantities (e.g., half a symbol).

Bar Graphs

• Use bars of equal width with equal gaps between them.
• Bar height/length is proportional to the value, read against a scale.
• Vertical bars suit height-like data; horizontal bars suit length-like data.

Worked Answers Recap

• Traffic count total (150+1200+1000+800+700+600) = 4,450.
• Bumrah’s total wickets across 30 matches = 90.
• Railway ticket scale: 1 unit = 4 tickets.
• Sapling week total = 312; greatest day = Friday (60), least = Wednesday (30).
• Mudhol dogs: villages B+D (84) > other four combined (72).

Quick revision: Solutions | Extra Questions for this chapter.

Written by Satish

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