How do researchers determine what is true based on the data they collect? This question is one of the central concerns of statistics, which uses mathematical models to draw useful conclusions about the real world.

Europe is, by convention, one of the world's seven continents. Comprising the western most point of Eurasia, Europe is usually divided from Asia by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting the Black and Aegean Seas.

A course is the study of a particular topic within a wider subject area and is the foundation of a qualification. A typical course includes lectures, assessments and tutorials.

Online or distance learning refers to the use of electronic media and information and communication technologies (ICT) in education. With online learning, one can access education at any time and from any location with an available internet connection.