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Data Handling Here is the CBSE Clat Chapter 3 for Class 7 students. Summary and detailed explanation of the lesson, including the definitions of difficult words. All of the exercises and questions and answers from the lesson's back end have been completed. NCERT Solutions for Class 7 Clat Data Handling Chapter 3 NCERT Solutions for Class 7 Clat Data Handling Chapter 3 The following is a summary in Hindi and English for the academic year 2025-26. You can save these solutions to your computer or use the Class 7 Clat.
Find the range of heights of any ten students of your class.
Let the heights (in cm) of 10 students of our class be
125, 127, 132, 133, 134, 136,138, 141, 144, 146
Highest value among these observations = 146
Lowest value among these observations = 125
Range = Highest value − Lowest value
= (146 − 125) cm
= 21 cm
Following table shows the points of each player scored in four games:
|
Player |
Game 1 |
Game 2 |
Game 3 |
Game 4 |
|
A |
14 |
16 |
10 |
10 |
|
B |
0 |
8 |
6 |
4 |
|
C |
8 |
11 |
Did not play |
13 |
Now answer the following questions:
(i) Find the mean to determine A’s average number of points scored per game.
(ii) To find the mean number of points per game for C, would you divide the total points by 3 or by 4? Why?
(iii) B played in all the four games. How would you find the mean?
(iv) Who is the best performer?
The rainfall (in mm) in a city on 7 days of a certain week was recorded as follows:
|
Days |
Rain fall (in mm) |
|
Monday |
0.0 |
|
Tuesday |
12.2 |
|
Wednesday |
2.1 |
|
Thursday |
0.0 |
|
Friday |
20.5 |
|
Saturday |
5.5 |
|
Sunday |
1.0 |
(i) Find the range of the rainfall in the above data.
(ii) Find the mean rainfall for the week.
(iii) On how many days was the rainfall less than the mean rainfall.
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