The percentage of marks obtained by students of a class in mathematics are:
64, 36, 47, 23, 0, 19, 81, 93, 72, 35, 3, 1
Find their mean.
Answers
Given : Percentage marks obtained by students: 64 , 36 , 47 , 23 , 0 , 19 , 81 , 93 , 72 , 35 , 3 , 1
Total number of students = 12
Mean marks = Sum of total marks / Total number of students
Mean marks = (64 + 36 + 47 + 23 + 0 + 19 + 81 + 93 + 72 + 35 + 3 + 1)/12
= 474/12
= 39.5
Hence, the Mean Marks is 39.5.
Extra information :
Mean:
The mean of a number of observations is the sum of the values of all the observations divided by the total number of observations.
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Given : Percentage marks obtained by students of a class in mathematics: 64 , 36 , 47 , 23 , 0 , 19 , 81 , 93 , 72 , 35 , 3 , 1
- Total number of students = 12
Formula used:-
- Mean marks = Sum of total marks / Total number of students
Mean marks = (64 + 36 + 47 + 23 + 0 + 19 + 81 + 93 + 72 + 35 + 3 + 1)/12
= 474/12
= 39.5