The percentage marks obtained by students of a class in mathematics ar

1.	The percentage 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.
Answer» The percentage marks obtained by students: 64 , 36 , 47 , 23 , 0 , 19 , 81 , 93 , 72 , 35 , 3 , 1 Sum of marks = 64 + 36 + 47 + 23 + 0 + 19 + 81 + 93 + 72 + 35 + 3 + 1 = 474 Total students = 12 Now, Mean marks = (Sum of marks ) / (Total students ) = \(\frac{474}{12}\) = 39.5 Mean Marks = 39.5

The percentage 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.

Answer»

The percentage marks obtained by students: 64 , 36 , 47 , 23 , 0 , 19 , 81 , 93 , 72 , 35 , 3 , 1

Sum of marks = 64 + 36 + 47 + 23 + 0 + 19 + 81 + 93 + 72 + 35 + 3 + 1

= 474

Total students = 12

Now, Mean marks = (Sum of marks ) / (Total students )

= \(\frac{474}{12}\)

= 39.5

Mean Marks = 39.5