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 ?
Total mark: 235. Total students: 50. Average mark: 4.7
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
A pupil's marks were wrongly entered as 83 instead of 63. Due to that the average marks for the class got increased by half (1/2). What is the number of pupils in the class?
In a class of 20 students in an examination in Mathematics 2 students scored 100 Marks each, 3 get zero each and the average of the rest was 40.
What is the average Of the whole class?
In a class there are total 63 students. The average age of girls is 24 years and that of boys is 21 years. If the average age of whole class is 22 years and 8 months, then how many boys are there in a class?
The average of the marks of maths test of 20 students is 9. If the marks of 5 new students are 9,5,3,2,1. What is the new average marks?
The average marks of three batches of 55, 60 and 45 students respectively is 50, 55, 60. What is the average marks of all the students?
