Deviation means how far from the normal. The Standard Deviation is a measure of how spread out numbers are. Its symbol is (the greek letter sigma).
Deviation means doing something that is different from what people consider to be normal or acceptable. Deviation from the norm is not tolerated.
Definition of deviation noun from the Oxford Advanced Learner's Dictionary. [uncountable, countable] deviation (from something) the act of moving away from what most people consider normal or acceptable; a difference from what is expected or acceptable. This is a deviation from the original plan.
An asset's standard deviation tells you how much its returns vary from its average. You can quickly calculate or look up the standard deviation of different assets. A high standard deviation can ...