# What will be the average marks of the class ?

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The detail of a class test are as given below :

Marks-------------- no. of students
2------------------4
3------------------7
4-----------------10
5-----------------15
6-----------------8
7-----------------5
8-----------------1
What will be the average marks of the class ?

posted May 5, 2015

+1 vote

Total mark: 235. Total students: 50. Average mark: 4.7

+1 vote

applying the formula of mean for descrete series.. summation of fx/N
235/50=4.7

total marks = 8+21+40+75+48+35+8=235
total students=50
so average marks of the class= 235/50 =4.7

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