Experiment is a typical quantitative research method that aims to provide a better understanding of the relationship between a causal hypothesis and a specific phenomenon which represents either theoretical or practical interest for the researcher. True experimental study design or random experimental design is the preferred method in quantitative research, especially in evaluation studies for it is the best option to ensure as great amount of control as possible and thus allow close examination of causal relationship(Kaplan,2004)
Therefore , the need is for smaller but focused samples rather than large random samples , which qualitative research categorizes data into patterns as the primary basis for organising and reporting results.
4."It certainly seems reasonable to suggest that one may have a better understanding of a community member's situation by reading a descriptive passage than just looking at demographic statistics"(Kruger,2003)