Standard deviation from ungrouped data. The standard deviation is a summary measure of the differences of each observation from the mean. If the differences themselves were added up, the positive would exactly balance the negative and so their sum would be zero. Consequently the squares of the differences are added.
A pissant, also seen as piss ant or piss-ant, refers to a specific type of ant. The word is also used as a pejorative noun or adjective, indicating insignificance.he original pissant is any of a certain group of large ant species, commonly called wood ants, that make mounded nests in forests throughout most of Europe.
Ants are social insects and they live in nested communities that are underground, in ground-level mounds, or in trees. Carpenter ants, which are some of the most destructive insects, live in dead wood.These ants consider the dead wood, or lumber, in your home to be a perfect habitat, especially if it is damp. Unlike termites, carpenter ants do not eat and digest wood. Ants tunnel through and live in wood.nts are social insects and they live in nested communities that are underground, in ground-level mounds, or in trees. Carpenter ants, which are some of the most destructive insects, live in dead wood.