NCERT Solutions for Class 7 Mathematics Chapter 3
Important NCERT Questions
Class vii Math Chapter 3 Data Handling Exercise 3.1
NCERT Books for Session 2022-2023
CBSE Board
Questions No: 6
The marks (out of 100) obtained by a group of students in a science test are 85, 76, 90, 85, 39, 48, 56, 95, 81 and 75. Find the: (i) The highest and the lowest marks obtained by the students. (ii) Range of the marks obtained. (iii) Mean marks obtained by the group.
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(i) Highest marks obtained by the student = 95
Lowest marks obtained by the student = 39
(ii) Range of marks = Highest marks – Lowest marks = 95 – 39 = 56
(iii) Mean of obtained marks = Sum of marks/Total number of marks
= 85+76+90+85+39+48+56+95+81+75/10
= 730/10 =73
Thus, the mean marks obtained by the group of students is 73.
Class 7 Maths Chapter 3 Exercise 3.1
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