"Deviation" refers to a departure or difference from a specific path, standard, or expected behavior. It occurs when something or someone veers away from what is considered normal, usual, or planned. Full definition
That gives us a figure measured in standard deviations from the average. (hussmanfunds.com)
After all, if the average amount of visitation given to a child is but five days a month, the standard deviation from such a low average is insignificant. (lw4sp.org)
These upper and lower bands are set above and below the moving average by a certain number of standard deviations of price, thus incorporating volatility. (schwab.com)