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 are one of the largest of all ant species. Carpenter ants have polymorphic workers, meaning that ants within a single colony may vary in size. Adult carpenter ants can measure from 6 to 12 mm in length. Males, or winged swarmers, can measure up to 18 mm, while queens grow to 20 mm in length.Carpenter Ant Size.A mature colony usually contains around 3,000 adult ants, but some species have been known to contain up to 100,000 ants. Like other ant species, carpenter ants are social insects, and their colonies are composed of different castes.ales, or winged swarmers, can measure up to 18 mm, while queens grow to 20 mm in length. Carpenter Ant Size. A mature colony usually contains around 3,000 adult ants, but some species have been known to contain up to 100,000 ants.