To calculate the standard deviation of those numbers: 1  1. 2  2. Then for each number: subtract the Mean and square the result. 3  3. Then work out the mean of those squared differences. 4  4. Take the square root of that and we are done!o calculate the standard deviation of those numbers: 1  1. 2  Work out the Mean (the simple average of the numbers). 3  2. Then for each number: subtract the Mean and square the result.
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James Brien Jim Comey, Jr. (born December 14, 1960) is an American lawyer and the current Director of the Federal Bureau of Investigation (FBI). Comey was the United States Deputy Attorney General from December 2003 to August 2005, serving in President George W. Bush's administration. As Deputy Attorney General, Comey was the second-highest-ranking official in the United States Department of Justice (DOJ), and ran the day-to-day operations of the Department.