Apollo "working from afar". While Apollo presided over the prophetic powers and magic of light and heaven, Hecate presided over the prophetic powers and magic of night and chthonian darkness. If Hecate is the "gate-keeper", Apollo "Agyieus" is the "door-keeper". Hecate is the goddess of crossroads and Apollo is the god and protector of streets. The oldest evidence found for Hecate's worship is at Apollo's temple in Miletos. There, Hecate was taken to be Apollo's sister counterpart in the absence of Artemis. Hecate's lunar nature makes her the goddess of the waning moon and contrats and complements, at the same time,
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