sociology

• structured interviews, questionaries and official statistics all provide quantitative data
• quantitative data is reliable and representative
• quantitative data has low validity due to standardised questions
• participant observation, unstructured interviews and documents all provide quantitative data
• qualitative data provides high validity due to open questions
• qualitative data has low reliability as the questions are not standardised
• qualitative data may not be representative due to small sample sized
• qualitative data may have ethical issues
• informed consent is an ethical concern