This document defines and describes different types of research. It discusses research as being systematic and organized to find answers to questions. Research is classified by purpose, including basic research, applied research, evaluation research, and research and development. Research is also classified by method, such as historical research, correlational research, descriptive research, causal comparative research, and experimental research. The document outlines the key steps of research as defining the problem, reviewing literature, formulating hypotheses, selecting a research design, collecting and analyzing data, and developing conclusions.