What type of research primarily focuses on statistical analysis and measurable data?

Quantitative research is characterized by its focus on numerical data and statistical analysis. This type of research often employs structured methods such as surveys, questionnaires, and experiments to collect measurable data, which can then be analyzed using statistical techniques. The strength of quantitative research lies in its ability to quantify relationships, assess patterns, and test hypotheses, making it an essential approach for drawing conclusions based on numerical evidence.

In contrast, qualitative research centers on understanding concepts, experiences, and motivations, using non-numerical data that cannot be easily measured or quantified. Experimental research is a branch of quantitative research that specifically tests hypotheses by manipulating variables under controlled conditions, but it does not exclusively focus on statistical analysis. Descriptive research, while it can involve quantitative elements, primarily aims to describe characteristics or phenomenon without necessarily drawing conclusions from statistical analysis. Thus, the emphasis on measurable data clearly identifies quantitative research as the correct answer.