RS Aggarwal Solutions Class 9 Maths Chapter 16 Presentation of Data in Tabular Form (Updated For 2021-22)

RS Aggarwal Solutions Class 9 Maths Chapter 16 Presentation of Data in Tabular Form: Looking for a good help guide for your Class 9 Maths exam preparation? Start studying the RS Aggarwal Solutions Class 9 Maths. The solutions of RS Aggarwal Solutions Class 9 Maths Chapter 16 Presentation of Data in Tabular Form are designed by the subject matter experts and are very well-explaied and credible.

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RS Aggarwal Solutions Class 9 Maths Chapter 16 Presentation of Data in Tabular Form

RS Aggarwal Solutions Class 9 Maths Chapter 16 Presentation of Data in Tabular Form – Overview

In the Chapter 16 Of RS Aggarwal Solutions Class 9 Maths, you will learn about Statistics, which is a discipline concerned with data collection, representation, analysis, organization, interpretation in a graphical format. You can also call it a sub-branch of science or mathematics.

You can apply the concept of statistics in different fields like industrial, economical, commercial, scientific, and social fields. 

In RS Aggarwal Solutions Class 9 Maths Chapter 16, the primary characteristics of statistics is explained:

• The aggregate of numerical facts forms statistical data. 

• The statistical data are collected for a specific motive and may be used for other things. 

• All the statistical data and facts are collected in an organised way. 

• Different statistical data are subjected to comparison. 

• The representation of the statistical data has to be in numerical form. 

To be able to understand the Chapter 16 more, you must know all these definitions:

• Class Interval: It is the particular number distribution of any numerical breadth of a class. Typically, class intervals are almost equal in breadth, but that may not be similar in every case.
• Class Size: It denotes the average number of items in a specified class. You can calculate it by dividing the total sum of items in a class divided by the total number of items in a class. 
• Class Mark: It represents the midpoint of any class interval. You can calculate it by computing the by the average of the upper limit and lower limit in a given class interval. 
• Class Limit: In a class, there are two class limits, i.e., lower and upper class limit.

1. Lower Class Limit: The smallest value of data present in a class.
2. Upper Class Limit: The highest value of data present in a class. 

• True Class Limit: You can obtain the true class limit in the frequency distribution format.

  In an inclusive class distribution, the upper limit of the preceding class is similar to the lower limit of the succeeding class. 

  In an exclusive class distribution, the upper limit of the preceding class is different from the lower limit of the succeeding class. 

  For example, 12-15, 16-19, 20-23, 24-27…

  The true lower limit of class 12-15- is (-0.5)

  The true upper limit of class 12-15- is (+0.5)

  The true limit of class 12-15 is 11.5 and 15.5

• Frequency Of A Class: It represents the number of observation in each class. Eg: If 8 people from the age group 10-15 are observed in statistical data, the frequency of class 10-15 interval is 8. 
• Cumulative Frequency Of A Class: In a frequency distribution table, when each frequency is added to the sum total of its predecessor frequencies, it is called the cumulative frequency of a class. 

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