NCERT Exercise 13.2 Q10 - Statistics
Question: The diameters (mm) 33-36, 37-40, 41-44, 45-48 and 49-52 occur with frequencies 15, 17, 21, 22 and 25. Find the mean diameter and standard deviation.
Answer: Mean diameter = 43.16 mm and standard deviation approximately 5.33 mm.
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