Research methods are the methods used to conduct research. Research methods are generally classified as ‘qualitative’ or ‘quantitative’. When both methods are used, it is referred to as ‘mixed methods’ research. Qualitative methods involve collecting and analysing non-numerical data (such as observations, interviews, questionnaires, focus groups, documents and artifacts). Qualitative methods can be used to understand concepts, opinions or experiences as well as to gather in-depth insights into a problem or generate new ideas. Quantitative methods involve collecting and analysing numerical data. Quantitative methods are generally used to find patterns and averages, make predictions, test causal relationships and generalise results to wider populations.