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Plural of Datum; a collection of measurements or information used in a research study. Data that have been collected but not yet analyzed are called Raw Data.


A single piece of information, or a single measurement. Rarely used; most often discussed in the plural form as Data.

Dependent Variable

Usually found in Experimental or Quasi-Experimental Designs, the Variable that changes as the result of the treatment. Sometimes used in any Quantitative Research study that looks at the impact of different effects. As opposed to an Independent Variable.

Descriptive Statistics

That branch of Statistics that looks at Distributions, especially in terms of Central Tendency and Dispersion. As opposed to Inferential Statistics.


DET is acronym for digital and educational technologies.

See example in this article.



The branch of scientific philosophy that says that the laws of science are absolute. Now mostly discredited and abandoned.


The part of a Primary Article where Results and Findings are summarized and examined, unusual aspects are explained, implications are laid out, and possible future research is described.


One property of Distributions that is examined in Descriptive Statistics. Dispersion describes the ways that scores in a distribution systematically spread out from some middle point. Common measures of Dispersion include the Range and the Standard Deviation.

Dissertation / Thesis

Dissertations are written by postgraduate students to get a licentiate or doctoral degree. The purpose of a dissertation is for students to prove that they know the earlier research within the discipline, master the area of research methodology, and can also contribute with new knowledge within the specific topic they write about. Therefore, dissertations also serve as very good overviews of earlier research and provide the reader with extensive reference lists. Sometimes, a dissertation consists of several articles that have been published in journals plus a comprehensive summary. These are called summary dissertations.

Student theses are written by university students, usually on the level of bachelor or master. Student theses do not carry the scientific weight of licentiate and doctoral dissertations, but they may also provide you with suggestions for other references, methodology and working methods within the field.

Note: the above content is directly quoted from the University Library Guides offered by the University Library at Jönköping University


In Statistics, a set of scores most often described by their Central Tendency and Dispersion. A Distribution can describe either a Sample or a Population.