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.

A student who achieves high scores on A-levels may have more options when it comes to choosing an advanced degree program. A-level exam scores are often a major factor in gaining enrollment in a respected university.

Part time learning allows one to obtain part-time degrees even if one cannot attend school on a full-time basis. One can learn at his or own pace, gradually accumulating credits which count towards final qualification.