Chapter 14 of the Class 4 Maths textbook Math Mela is Data Handling, the final chapter of the book. It covers collecting and organising data using tally marks, pictographs, and bar graphs.
Tally Marks
Q: How are tally marks used to record data, and how is a group of 5 shown?
A: Each tally mark represents one count. A group of 5 is shown as four vertical strokes with a fifth stroke drawn diagonally across them, making counting groups of 5 quick and easy.
Pictographs
Q: In a pictograph where each picture of an apple represents 2 students, how many students does a row of 3 apple pictures represent?
A: 3 × 2 = 6 students.
Bar Graphs
Q: In a bar graph showing favourite fruits, how do you find which fruit is the most popular?
A: Look for the tallest bar in the graph — the tallest bar represents the fruit chosen by the most students.
Collecting and Organising Data
Q: What is the first step before drawing a bar graph or pictograph?
A: Collecting the raw data (for example, by asking each student their favourite fruit) and organising it into a frequency table using tally marks, before turning it into a visual graph.
Frequently Asked Questions
Why do we use pictographs and bar graphs instead of just numbers?
Visual representations make it easier and quicker to compare data at a glance, without having to read and compare a list of numbers.
What does a tally mark group of 5 look like?
Four vertical lines with a fifth line drawn diagonally across them.
Class 4 Mathematics Chapter 14 – Notes and Extra Questions
Along with these NCERT Solutions, students can also use the Class 4 Mathematics Chapter 14 Extra Questions and Class 4 Mathematics Chapter 14 Revision Notes for quick revision and extra practice.
