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.
Most ants are black, brown, tan, or or red. All ants are social insects. With few exceptions, ant colonies divide labor between sterile workers, queens, and male reproductives, called alates. Winged queens and males fly in swarms to mate.Once mated, queens lose their wings and establish a new nest site; males die.ll ants are social insects. With few exceptions, ant colonies divide labor between sterile workers, queens, and male reproductives, called alates. Winged queens and males fly in swarms to mate. Once mated, queens lose their wings and establish a new nest site; males die.