Quantitative and qualitative methods both have strengths and weaknesses for collecting data. Quantitative methods use numerical data like statistics that can be analyzed quickly but may lack context. Qualitative methods provide rich descriptive data through documents, observations, and interviews but require more time to analyze. Specific techniques include questionnaires that can reach many people but risk misunderstanding, and interviews that give in-depth personal information but are time-consuming. Both approaches can sometimes be combined to leverage their respective benefits.