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I have 12 golf b***s which were rolled a certain distance on a flat surface the sum x = 48m derived from each roll and the sum of x

squared =192.38 I need to calculate the mean (which is 4) and the standards deviation to 2 decimal places. How do I calculate the standard deviation?

 Feb 11, 2016
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standart deviation it is mean how far the number from mean

 Feb 11, 2016

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