Question

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:
(1)
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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Answer 1

Answer:

1) Highest mark =95 and lowest mark =39

2)range of marks= highest mark -lowest mark

range= 95-39 = 56

3)mean = 730/10 = 73