This document discusses different types of research methods and their key characteristics. Qualitative research is exploratory in nature and aims to understand opinions and motivations. Quantitative research commonly uses statistics and figures, especially in science. Primary research directly answers a specific question, such as through surveys. Secondary research utilizes existing information originally collected for other purposes. The document also defines objective as uninfluenced by feelings, subjective as influenced by opinions, valid as based in truth, and reliable as trustworthy and predictable.