The first two styles are known as âin-textâ citation styles, which means that you give some information about the source directly after the quotation, but leave the rest to a list of References (APA) or Works Cited (MLA) at the end of the paper.
A data analysis is a comprehensive summary of the results of your research and lists the main conclusions drawn from your tests and experiments. The analysis typically summarizes two main parts of a research document: data preparation and descriptive statistics (experimental studies) and inferential statistics (quantitative studies). The final section is the qualitative analysis that explains why some types of results are relevant.
1 Grammatical Analysis and Discourse Analysis.  2 The grammarian's 'data' is typically the single sentence, or a set of single sentences illustrating a particular feature of the language being studied.