Statistics Edexcel GCSE - Standard Deviation 4.0 / 5 based on 1 rating ? Statisticsstandard deviationGCSEEdexcel Created by: BANGTAN_SAMCreated on: 12-03-19 14:40 define standard deviation spread of data around the mean 1 of 5 non grouped standard deviation formula o = square root of the sum of x - xbar squared over n 2 of 5 grouped data standard deviation mean o = square root of the sum of the frequency time x - xbar squared over the sum of the frequency 3 of 5 what does a low standard deviation mean the values are not spread out 4 of 5 what does a high standsrd deviation mean the values are very spread out 5 of 5
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