Data Handling and Presentation | Class 6 Mathematics Notes

Introduction to Data Handling

Data handling is an essential part of mathematics that deals with collecting, organizing, and interpreting information. In our daily lives, we come across various types of data, such as the number of students in a class, the favorite games of children, or the number of books borrowed from a library. Handling data helps us to make sense of this information and draw meaningful conclusions. The process of data handling involves several steps: first, data collection through surveys or observations; second, organizing the data systematically; third, representing the data visually; and finally, interpreting the data to answer questions or solve problems. This chapter introduces these steps and explains how to work with data effectively. Understanding data handling helps students develop skills to analyze information critically and make informed decisions in real life.

📊 Diagram: Figure 1 on page 1; Figure 2 on page 1; Figure 3 on page 1; Figure 4 on page 1

🧪 Activity: Observe and list different types of data you encounter in your daily life, such as the number of vehicles passing by your street or the number of students wearing different colors of clothes.

🔗 Connection: This section lays the foundation for the next section, which explains how to organize collected data systematically in tables.

Table on page 5 (1×7)

| Letter | c | e | i | r | x | Any other letter of your choice |

| Number of times found in the news item | | | | | | |

Table on page 7 (3×2)

Table on page 11 (7×4)

| Thursday Friday Saturday a. On which day were the minimum number of books borrowed? b. What was the total number of books borrowed during the week? c. On which day were the maximum number of books borrowed? What may be the possible reason? 2. M agan Bhai sells kites at Jamnagar. Six shopkeepers from nearby villages come to purchase kites from him. The number of kites he sold to these six shopkeepers are given below — Shopkeeper Number of Kites Sold Chaman 250 Rani 300 Rukhsana 100 Jasmeet 450 Jetha Lal 250 Poonam Ben 700 | | | |

Table on page 17 (1×9)

| Match | Match 1 | Match 2 | Match 3 | Match 4 | Match 5 | Match 6 | Match 7 | Match 8 |

Table on page 20 (2×5)

Table on page 20 (1×6)

| Number of tickets | 24 | 20 | 16 | 28 | 16 |

Table on page 21 (10×7)

| Vidisha Jabalpur Seoni Indore Sagar City a. Write the number of tickets sold for Vidisha above the bar. b. Write the number of tickets sold for Jabalpur above the bar. c. The bar for Vidisha is 6 unit lengths and the bar for Jabalpur is 5 unit lengths. What is the scale for this graph? d. Draw the correct bar for Sagar. e. Add the scale of the bar graph by placing the correct numbers on the vertical axis. f. Are the bars for Seoni and Indore correct in this graph? I not, draw the correct bar(s). 3. Chinu listed the various means of transport that passed across the road in front of his house from 9 a.m. to 10 a.m.: bike car bike bus bike bike bike auto rickshaw bicycle bullock bicycle auto cart rickshaw car scooter car auto bicycle bike rickshaw car auto rickshaw bike scooter bike car bicycle scooter bicycle scooter bike bus auto rickshaw auto rickshaw bike bicycle bus bike bicycle scooter bus scooter auto bike rickshaw | | | | | | |

| | bike | auto rickshaw | bicycle | bullock cart | bicycle | auto rickshaw | | | car | scooter | car | auto rickshaw | bicycle | bike |

| | bicycle | scooter | bus | scooter | auto rickshaw | bike |

| | scooter | bicycle | bike | bullock cart | auto rickshaw | scooter |