if standard deviation is half of the mean and half of the standard deviation is raised, then the standard deviation is _. what is a standard deviation what is the rule of thumb for standard deviation what to say when the normal deviation is high what is the rule of thumb for standard deviation standard deviation for standard deviation what is the rule of thumb for a high deviation why is a standard deviation higher than average? what is the rule of thumb for high standard deviation how to tell if something isn't right by the standard deviation what is high standard deviation what is the rule of thumb for a high standard deviation standard deviation of a value in a set of values which statement describes an important rule of thumb for a standard deviation? what should be the standard deviation for comparing a range what is a rule of thumb on a mean what is standard deviation what is the rule of thumb for standard deviation what is a good rule of thumb for the sd what's the average standard deviation of a given set of data?