Multipurpose Retail Booth. Welcome to Specialty Vehicles, the preeminent source of new and used trolleys, trams, electric shuttles, and other types of people movers. Since 1982, we have manufactured, distributed and sold our diversified line of vehicles to clients in an array of different industries.
Case Study Case studies are the most popular qualitative methods of data analysis. A case study method focuses on the in depth study of a single, usually complex series of events, that make up a case.
Item Analysis describes the statistical analyses which allow measurement of the effectiveness of individual test items. An understanding of the factors which govern effectiveness (and a means of measuring them) can enable us to create more effective test questions and also regulate and standardise existing tests. There are three main types of Item Analysis: Item Response Theory, Rasch Measurement and Classical Test Theory. Classical Test Theory (traditionally the main method used in the United Kingdom) utilises two main statistics-Facility and Discrimination. The main problems with Classical Test Theory are that the conclusions drawn depend very much on the sample used to collect information.