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Practice, difficulty 1 of 3

Coefficient of variation

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A filling machine is set to 500 ml. Ten bottles from today's production contain (ml):

482.9, 490.7, 483.8, 479.0, 502.2, 483.4, 483.4, 479.6, 472.1, 492.0

Calculate the coefficient of variation as a percentage, to 2 decimal places.