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Q.

The marks obtained by 12 students in an examination (out of 50) are given below. 18, 35, 2, 27, 40, 0, 21, 33, 27, 8, 36, 23. Find the mean marks.


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a

22.5

b

23

c

24

d

25 

answer is A.

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Detailed Solution

Concept-Average is the average of the data. It helps us get an idea of ​​the overall data. To find the average of the given data, we first need to  find the sum of all the grades obtained by the 12 students. After that, you need to divide this total by the  number of points. H. Total number of point values ​​to be considered (12 here).
Marks obtained by students-
Question ImageSum of marks Question ImageTotal no. of students =12
Therefore,
Mean marks =total no. of students
Sum of marksQuestion ImageHence, the correct option is  1.
 
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