Say we have a bunch of numbers like 9, 2, 5, 4, 12, 7, 8, 11. 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.
Best Answer: The .925 does mean sterling silver and the FB may be a Hallmark. You did not state what is on the medallion so I don't know where it was made. On some silver items the FB stands for Franz Bibus a Czech silversmith.
F1: The F stands for filial generation. F1 means first generation and is a common scientific term. This, in the Labradoodle breed, is the coding for first-cross, purebred poodle to purebred Labrador Retriever. The results are mixed, as this is not the breeding of two like dogs, or dogs that resemble each other. F1 Labradoodles typically are moderate- to low- shedding and have a sparse-hair to fleece coat.