Find the mean using step deviation method — task. Maths CBSE Live product, Class 10.

Find the mean number of children of various age groups playing in the park using the step deviation method.

Age	\(2 - 4\)	\(4 - 6\)	\(6 - 8\)	\(8 - 10\)	\(10 - 12\)
Number of children	5	9	9	8	2

The mean of the data is

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4. Find the mean using step deviation method