RD Sharma Class 7 Solutions Chapter 23 - Data Handling II (Ex 23.2) Exercise 23.2

Let us look at some of the most important topics covered in the RD Sharma class 7 chapter 23 - Data Handling II are - 

• Central Value

• Measurements of central value

• Arithmetic mean

• Range

• The arithmetic mean of grouped data

• Median

• Mode

Students can know more about these topics by practising questions from the RD Sharma book for class 7. To help students easily grasp all these topics, we at Vedantu provide Free solutions to all the questions included in chapter 23 - Data Handling II.

Formulas on Mean, Median, and Mode As Mentioned in RD Sharma Class 7 Chapter 23

Formulas are an important part of maths, chapter 23 - Data Handling II of class7 is not any different. Majorly the RD Sharma class 7 solutions chapter 23 - Data Handling II contains three formulas, these formulas are - 

• Mean: Mean formula is defined as the sum of all the observations divided by the total number of observations. 

Mean Formula = (Sum of all the Observations) ÷ (Total Numbers of Observations, n)

• Median: To find the median of a given observation, we first need to arrange the data in ascending or descending order. There are two formulas to find the median of an observation.

If the total number of observations (n) is Odd then, then

Median = $(\frac{n+1}{2})$th observation

If the total no. of observations (n) is even, then

Median = ($(\frac{n}{2})$th observation + $(\frac{n}{2}+1)$th observation ) / 2

• Mode: The observation or value which most frequently occurs is considered as the Mode.

Hence, the second part of the Data Handling (chapter 23 - Data handling II) discusses the central values of the data. There are three types of central values - mean, median, and mode. Exercise 23.2 exclusively targets the procedure to find the arithmetic mean of grouped data.