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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Federal Bureau of Investigation. Federal Bureau Investigation (FBI) and Central Intelligence Assignment (CIA). The acronyms stand for 'Federal Bureau of Investigation' and 'Central Intelligence Agency'. As for what they stand for morally, the FBI stand for american justice and freedom and the CIA stand for Dick Cheney and Donald Rumsfield. CIA also stands for a Certified Internal Auditor.