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 the equating of tests administered to groups with similar abilities; for example, two tests administered to students in the same grade in two consecutive calendar years. Different tests are used to avoid practice effects. In terms of item response theory, equating is just a special case of the more general process of "scaling", applicable when more than one test is used. In practice, though, scaling is often implemented separately for different tests and then the scales subsequently equated. A distinction is often made between two methods of equating; "common person" and "common item" equating. Common person equating involves the administration