Question

सापागाणा गाना
culate Arithmetic Mean by Step - Deviation method
| Marks - 0-10/10-20 / 20-30 30-40/40-50/50-60
no of students -
5/7/12/16/6/4​

Answer 1

Please refer to the attachment.

Answer 29.6

Step Deviation Formula:

$\qquad \quad \boxed{ \mathtt{ \bold{ A + h \left( \frac{ \Sigma f_{i}u_{i} } { \Sigma f_{i} } \right) }}}$