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2, 43, 30, 38, 30, 42, 12, 47, 39, 37, 34, 46, 32, 18, 41, 11 Calculate the standard deviation (ecart-type) of the number of

2, 43, 30, 38, 30, 42, 12, 47, 39, 37, 34, 46, 32, 18, 41, 11

Calculate the standard deviation (ecart-type) of the number of calls in this sample.

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