Data Handling — Chapter Summary
ICSE · Class 6 · Mathematics
Summary of Data Handling for ICSE Class 6 Mathematics. Key concepts: Raw data is the initial, A pictograph represents data and A bar graph uses bars.
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Overview
In our daily lives, we come across a lot of information in the form of numbers, such as marks scored by students, number of vehicles sold, or the number of children in families. This information is called data. In this chapter, we learn how to collect, organize, represent, and interpret such data. W
Key Concepts
Raw data is the initial collection
Raw data is the initial collection of observations. When we count how many times each number appears, it is called its frequency. We use tally marks t
A pictograph represents data using pictures
A pictograph represents data using pictures or symbols. Each symbol stands for a certain number of items, making it easy to understand at a glance.
A bar graph uses bars
A bar graph uses bars of equal width but different heights to show data. Bars can be drawn vertically or horizontally.
The mean is calculated by adding
The mean is calculated by adding all the values and dividing by the total number of values. For example, the mean of 5, 8, and 9 is (5+8+9) ÷ 3 = 22 ÷
The median is the middle value
The median is the middle value when data is arranged in ascending or descending order. If there are two middle values, we take their average.
Learning Objectives
- Understand what data is and how it is collected
- Learn to organize raw data using frequency distribution tables and tally marks
- Represent data using pictographs and bar graphs
- Calculate the mean (average) of a set of numbers
- Find the median of a data set when arranged in order
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Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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