Class boundaries Frequency (f) Mid Point (m) 9 14 1 11.5 14 19 3 5 4 19-24 24-29 The mid point of the class boundary 14 i) For the class boundary 19-24, fam= iii) Find Efzm iv) Find the mean = 19 is (m) 21.5 26.5 (fm) 11.5 49.5 106

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