Empirical research according to Penn State University is based on “observed and measured phenomenon and derives the knowledge from actual experience rather than from theory or belief”.
Any research paper like a thesis or dissertation requires relevant variables to be defined correctly. Variables are simply factors that represent properties, qualities, or characteristics of a person, thing, or concept.
A well-structured literature review has many components and is the key to a successful research. The literature review needs a logical and clear structure for a rich understanding.
There are several types of literature review techniques that can be followed in a thesis. They depend on the type of research and the purpose of the study.