6) The marks out of too) obtained by a hlay
а of
students in
science test are 85, 76,
a8, 85,39,48 356, 9581 and to. Tind the
i) The highest and the lowest marks
obtained by the student. U
Lowest marks tekino
ii) Range of the marks
Answers
Explanation:
Ncert solutions
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Mathematics
Science
Chapters in NCERT Solutions - Mathematics, Class 7
Exercises in Data Handling
Question 6
Q6) 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) 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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Solution:
Marks obtained by a group of students in a science test can be arranged in ascending order as follows-
39, 48, 56, 75, 76, 81, 85, 90, 95
i) Highest marks = 95
Lowest marks = 39
ii) Range = 95-39 = 56
iii) Mean marks = \frac{85+76+90\ +\ 85\ +39\ +\ 48\ +\ 56\ +\ 95\ +\ 81\ +\ 75}{10}\ =\ \frac{730}{10}\ =\ 73
Answer:
Explanation:
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