Consider the table below: Classes Frequency, Cumulative Midpoint, fm (Mass) Frequency (kg) 30.00< 40.00 40.00 < 50.00 50.00< 60.00 60.00< 70.00 f 4 A 4 60 4 B 43 60 The standard deviation is closest to: m 35.00 45.00 55.00 U 140 495 fm² 4900 22275 1540 84700 1105 71825

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