# NCERT Solutions for Class 7 Maths Chapter 3

NCERT Solutions for Class 7 Maths Chapter 3 Data Handling Exercise 3.1, Exercise 3.2, Exercise 3.3 and Exercise 3.4 in English and Prashnavali 3.1, 3.2, 3.3 and Prashnavali 3.4 in Hindi Medium free to download in PDF file format.

Videos related to chapter 3 all exercises are prepared in such a way, students can understand solutions easily. NCERT Solutions 2021-2022 are updated for the current academic session 2021-2022. All the NCERT Solutions are based on updated NCERT Textbooks 2021-22.## NCERT Solutions for Class 7 Maths Chapter 3

Class: 7 | Mathematics |

Chapter 3: | Data Handling |

### 7 Maths Chapter 3 Solutions

7 Maths Chapter 3 Data Handling all exercises solutions with complete explanation are given below. No login or password is required to access these solutions for the session 2021-22.

### 7th Maths Chapter 3 All Exercises in English Medium

### 7 Maths Chapter 3 All Exercises in Hindi Medium

#### Class 7 Maths Exercise 3.1 & 3.2 Solutions in Video

#### Class 7 Maths Exercise 3.3 & 3.4 Solutions in Video

#### About NCERT Solutions for Class 7 Maths Chapter 3

In 7 Maths Chapter 3 Data Handling, we will study about statistics section of mathematics, which includes the collection of data and then their proper representation to understand easily. The following are the tools or methods to representations:

1. Arithmetic Mean: The most common representative value of a group of data is the arithmetic mean or the mean. The average or Arithmetic Mean (A.M.) or simply mean is defined as the sum of observations divided by number of observations.

2. Range: The difference between the highest and the lowest observation is called the range of the observation.

3. Mode: The mode of a set of observations is the observation that occurs most often.

4. Median: After arranging the data in ascending or descending order, the median gives us the middle observation.

##### Class 7 Maths Try These

The above mentioned term provide us a numerical value related to our data. but the Bar Graph provides us a visual representation about the collected data. The concept of probability is also introduced in this chapter. There are situations in our life, that are certain to happen, have probability 1. Some that are impossible and some that may or may not happen, have probability 0.

### Important Questions on Class 7 Maths Chapter 3

##### The scores in mathematics test (out of 25) of students is as follows: 19, 25, 23, 20, 9, 20, 15, 10, 5, 16, 25, 20, 24, 12, 20. Find the mode and median of this data. Are they same?

Arranging the given data in ascending order:

= 5, 9, 10, 12, 15, 16, 19, 20, 20, 20, 20, 23, 24, 25, 25

Mode is the observation occurred the highest number of times.

Therefore, Mode = 20 Median is the middle observation = 20

Yes, Mode and Median are same of given observation.

##### Find the mode and median of the data: 13, 16, 12, 14, 19, 12, 14, 13, 14.

Arranging the given data in ascending order, 12, 12, 13, 13, 14, 14, 14, 16, 19

Mode is the observation occurred the highest number of times = 14

Median is the middle observation = 14

##### Tell whether the statement is true or false: The mode is always one of the numbers in a data.

True.