Standard Deviation. Standard deviation is a statistical measurement of the variation in a set of data. Standard deviation indicates how much the values of a certain data set differ from the mean on average.tandard deviation is a statistical measurement of the variation in a set of data. Standard deviation indicates how much the values of a certain data set differ from the mean on average.
The salty taste you are experiencing could be due to many causes. It could be that you are dehydrated especially if you are taking a medicine such as a diuretic, or drinking too much cafienated drinks (coffee, coke.. etc).
This condition can happen when people have been vomiting, or have a fever, or when they are exercising too much, not replacing fluids and have too much salt in their system from drinking salty sports drinks or tablets, or from salty foods.