If for some , the frequency distribution of the marks
obtained by 20 students in a test is :
Marks | 2 | 3 | 5 | 7 |
Frequency |
then the mean of the marks is :
3.2
3.0
2.5
2.8
Given that total students = 20
So,
=>
=>
cannot be -ve
So,
Put
correct option (4)
Option 1)
3.2
Option 2)
3.0
Option 3)
2.5
Option 4)
2.8
Study 40% syllabus and score up to 100% marks in JEE