To 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.4  3. Then work out the mean of those squared differences.5  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.
FBF = Flashback Friday. #FBF is an acronym primarily used on Instagram, Facebook, Twitter, and Tumblr that stands for Flashback Friday. Users typically use the tag on photos of moments in their past, like last yearâs vacation or a childhood friend.
âlbf/inÂ²â is one of the many acronyms used for âPounds Force per Square Inchâ pressure units of which âpsiâ is the most commonly used. The factor for converting lbf/inÂ² into bar is 0.068948., e.g. 15 psi = 1.03422 bar. psi to bar. What is the equation for psi to bar? psi to bar = multiply by 0.0689476â¦ psi to bar