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 origin. It is common in educational assessment to employ tests in order to assess different groups of students with the intention of establishing a common scale by equating the origins, and when appropriate also the units, of the scales obtained from response data from the different tests. The process is referred to as equating or test equating. In item response theory, two different kinds of equating are horizontal and vertical equating. Vertical equating refers to the process of equating tests administered to groups of students with different abilities, such as students in different grades (years of schooling). Horizontal equating refers