This document discusses different types of research methods. It provides examples of where primary research involving surveys and secondary research on ghosts were used. Secondary research allows easy access to information but credibility may be compromised. Quantitative research with surveys provides audience opinions but they may be biased. Market research on competitors gives understanding of their strengths and weaknesses, but products change frequently. Overall, secondary research, audience research, and market research were most effective, while qualitative research, quantitative research, and primary research need improvement.