Diana (mythology) sacred grove on the shores of Lake Nemi, Diana was venerated as a triple goddess beginning in the late 6th century BCE. Andreas Alföldi interpreted an image on a late Republican coin as the Latin Diana "conceived as a threefold unity of the divine huntress, the Moon goddess and the goddess of the nether world, Hekate". This coin, minted by P. Accoleius Lariscolus in 43 BCE, has been acknowledged as representing an archaic statue of Diana Nemorensis. It represents Artemis with the bow at one extremity, Luna-Selene with flowers at the other and a central deity not immediately identifiable, all
Equating either form. This relationship can be nonlinear. Unlike with item response theory, equating based on classical test theory is somewhat distinct from scaling. Equating is a raw-to-raw transformation in that it estimates a raw score on Form B that is equivalent to each raw score on the base Form A. Any scaling transformation used is then applied on top of, or with, the equating. Equating Test equating traditionally refers to the statistical process of determining comparable scores on different forms of an exam. It can be accomplished using either classical test theory or item response theory. In item response theory,