Question 6(iii)
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:
Mean marks obtained by the group.

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Solution

Mean of obtained marks $= \frac{S u m o f m a r k s}{T o t a l n u m b e r o f m a r k s}$
$= \frac{85 + 76 + 90 + 85 + 39 + 48 + 56 + 95 + 81 + 75}{10}$
$= \frac{730}{10} = 73$
Thus, mean marks obtained by the group of students is 73 .

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Q. Question 6(ii)
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:
Range of the marks obtained.

Q. Question 6(i)
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:
The highest and the lowest marks obtained by the students.

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.

The marks (out of

100

) obtained by group of students in a science test are

85, 76, 90, 85, 39, 48, 56, 95, 81

and

75.

Find the:

1)Highest and lowest marks obtained by students.

2)Mean marks obtained.

3)No. of students who obtained marks more than mean marks.

The marks (out of $100$ ) obtained by a group of students in science test are $85, 76, 90, 84, 39, 48, 56, 95, 81$ and $75$ . Find the
(i) highest and the lowest marks obtained by the students.
(ii) range of marks obtained.
(iii) mean marks obtained by the group.

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Arithmetic Mean and Range

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Question 6(iii) 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: Mean marks obtained by the group.

Mean of obtained marks =Sum of marksTotal number of marks =85+76+90+85+39+48+56+95+81+7510 =73010=73 Thus, mean marks obtained by the group of students is 73 .

Question 6(iii)
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:
Mean marks obtained by the group.

Mean of obtained marks $= \frac{S u m o f m a r k s}{T o t a l n u m b e r o f m a r k s}$
$= \frac{85 + 76 + 90 + 85 + 39 + 48 + 56 + 95 + 81 + 75}{10}$
$= \frac{730}{10} = 73$
Thus, mean marks obtained by the group of students is 73 .