When you have the average production of three machines, it is easy to calculate the average or mean production. You just add ...

Standard deviation is a readily available and easily understood statistic that measures how often an event strays from the norm. Think of two amusement park rides.

The standard deviation is a formal measure of the tendency of the numbers in your list to vary – or deviate – from the mean. You can think of it as a measure of how "spread out" your numbers are.

Standard deviation is a measure of how far away individual measurements tend to be from the mean value of a data set. The standard deviation of company A's employees is 1, while the standard ...

Standard deviation is a common statistical measurement and is defined by Oxford Dictionaries as: ‘A quantity expressing by how much the members of a group differ from the mean value for the ...