Educ 213 E-Portfolio of Macaya

We the NDMU Students.This blog is designed as a partial fulfillment in Educ.213(Advanced Educational Statistics).With this blog, the author is aspiring for strategies and methods which are useful to develop her potentials for the 21st century skills which are blended with higher order thinking skills, multiple intelligences, ICT and multimedia.

Lunes, Hulyo 25, 2011

Variables

Statistics are used to explore numerical data (Levin, 1991). Numerical data are observations which are recorded in the form of numbers (Runyon, 1976). Numbers are variable in nature, which means that quantities vary according to certain factors. For examples, when analyzing the grades on student essays, scores will vary for reasons such as the writing ability of the student, the students' knowledge of the subject, and so on. In statistics, these reasons are called variables. Variables are divided into three basic categories:

  • Nominal Variables
  • Ordinal Variables
  • Interval Variables
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