years
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:
Highest and the lowest marks obtained by the students.
Range of the marks obuined.
( Mean marks obtained by the group.
Answer:
73
Step-by-step explanation:
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
10
85+76+90 + 85 +39 + 48 + 56 + 95 + 81 + 75
=
10
730
= 73