Question

The marks (out 0f 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: (3x1=3)
Mean marks obtained by the group.
Highest and lowest marks obtained by the students. Range of the marks obtained.

Answer 1

Answer:

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 = 39+48+56+75+76+81+85+90+95/10

=730/10

=73

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