The standard deviation for grouped and ungrouped data calculation (step by step illustration)
Non-Grouped DataNon-grouped data is just a list of values. The standard deviation is given by the formula:s means ‘standard deviation’.S means ‘the sum of’. means ‘the mean’ ExampleFind the standard deviation of 4, 9, 11, 12, 17, 5, 8, 12, 14First work out the mean: 10.222Now, subtract the mean individually from each of the numbers …