NCERT Solutions for Class 7 Maths Chapter 3 – Data Handling
This chapter of Maths deals with data. Also, data is of various types, especially in Maths. The CBSE advise the utilization of NCERT books that contains all the study materials of the chapter. These NCERT Solutions for Class 7 Maths Chapter 3 is intended per the most recent course of study of the CBSE board. Also, it covers each topic mentioned in the NCERT book. Above all, it’s an answer to each question of the exercises mentioned in the chapter.
The NCERT Solutions for Class 7 Maths Chapter 3 designed while keeping in mind the flexibility of students who are about to use them.
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CBSE Class 7 Maths Chapter 3 – Data Handling NCERT Solutions
Data handling is one of the most common activities of Maths. Also, it helps in sorting, analyzing, and organizing things. Apart from that, presenting data is also an important part of data handling.
In simple words, data handling is a process of collecting, arranging, analyzing, and presenting data in an understandable form.
Sub-topics covered under NCERT Solutions for Class 7 Maths Chapter 3
3.1 Introduction
This topic discusses the various ways by which we can identify data with the help of given examples.
3.2 Collection of Data
This topic discusses the various ways by which we can collect data. Also, it tells that the collected data cannot give a proper result until it is properly processed.
3.3 Organisation of Data
A collected data look like a mess so to make it presentable we organize it. Also, organizing gives the data a rough layout which makes work easy for other steps.
3.4 Representative Values
The value which symbolizes a group of person or data is representative values. Also, they are the average of the whole group.
3.5 Arithmetic Mean
Arithmetic mean or mean is the average value of a group of unit.
Arithmetic mean = \(\frac{sum of total value of unit}{total number of unit}\)
3.5.1 Range- It is the difference between the highest and lowest value.
3.6 Mode
Mode is the value that is obtainable after dividing the total of the unit with the total number.
Mode = \(\frac{sum of all units}{total number of unit}\)
3.6.1 Mode of large data- For finding the mode of the large data, we tabulate it and then the frequency of it helps in finding the mean of the data.
3.7 Median
Median refers to the mid-value that divides the entire unit into two equal halves.
3.8 Use of Bar Graphs with a Different Purpose
This topic discusses the different uses of bar graph which can help in presenting the data of frequency of mode for presentation on a graph.
3.8.1 Choosing a Scale- This helps you to choose the best measuring object (scale) for the graphs.
3.9 Chance and Probability
This topic discusses chances and probability
3.9.1 Chance- refers to the prediction of the outcome. And the probability is the chance of happening of an outcome.
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