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.
Carpenter ants (Camponotus spp.), also known as sugar ants, are large (0.3 to 1.0 in or 0.76 to 2.54 cm) ants indigenous to many forested parts of the world.They build nests inside wood consisting of galleries chewed out with their mandibles, preferably in dead, damp wood.They do not consume the wood, however, unlike termites. Sometimes, carpenter ants hollow out sections of trees.They also commonly infest wooden buildings and structures, and are a widespread nuisance and major cause of structural damage.hey do not consume the wood, however, unlike termites. Sometimes, carpenter ants hollow out sections of trees. They also commonly infest wooden buildings and structures, and are a widespread nuisance and major cause of structural damage.