Soorma batch launch class 11-12

If 1-5 , 6 -10 , 11-15 , 16-20, ..., are the classes of a frequency distribution , then the lower boundary of the class 11-15 is "_______" .

If 1-5, 6-10, 11-15, ........, are classes of a frequency distribution, then the mid-value of class 11-15 is ______.

Class 11 Most Important Chapters for Class 12

Revision of class 11