TBQ - Step deviation method — task. Maths CBSE Mentoring Hindi, Class 10 Crash course.

Find mean by Step deviation method.

Class interval	\(10-25\)	\(25-40\)	\(40-55\)	\(55-70\)	\(70-85\)	\(85-100\)
Number of students	\(2\)	\(3\)	\(7\)	\(6\)	\(6\)	\(6\)

Mean \(=\)

Did you find an error?

3. TBQ - Step deviation method