NCERT Example 6 - Statistics

Question: For marks classes 10-20, 20-30, ..., 70-80 with frequencies 2, 3, 8, 14, 8, 3, 2, find mean deviation about the mean.

Answer: Mean = 45 and M.D. = 10.

Full step-by-step NCERT solution with diagrams on Something by Zero.

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