Question

5) The marks 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.
following:​

Answer 1

5) The marks 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.

ollowing:

Ans. (1) Highest marks obtained by the students is 95 and lowestmarks obtained by the students is 39 .

(2) Highest marks - lowest marks

= 95 - 39 = 56

(3) Mean = Sum of all observation / Total number of observation

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

= 730 / 10

= 73