So sánh phương pháp

	Khảo sát	Nghiên cứu phương pháp hỗn hợp
Lĩnh vực	Phương pháp luận khảo sát	Định tính
Họ	Process / pipeline	Process / pipeline
Năm ra đời	Late 19th century; systematic social-science use from 1940s	—
Người khởi xướng	Francis Galton, Charles Booth, and early social statisticians; formalised by Paul Lazarsfeld in the 1940s	—
Loại	Quantitative (primarily) or mixed-methods data-collection instrument	Research design framework
Công trình gốc	Dillman, D. A., Smyth, J. D., & Christian, L. M. (2014). Internet, Phone, Mail, and Mixed-Mode Surveys: The Tailored Design Method (4th ed.). Wiley. ISBN: 978-1118456149	Creswell, J.W. & Plano Clark, V.L. (2018). Designing and Conducting Mixed Methods Research (3rd ed.). Sage. ISBN: 978-1483344379
Tên gọi khác	questionnaire survey, survey research, self-report survey, questionnaire study	Karma Yöntem Araştırması (Mixed Methods), multi-method research, triangulation design
Liên quan	6	4
Tóm tắt	A survey is a systematic data-collection method in which a standardised set of questions is posed to a sample of respondents to measure attitudes, behaviours, demographics, or other constructs. Surveys can be administered via paper, telephone, online platforms, or face-to-face. They are among the most widely used instruments in social, behavioural, health, and educational research because they can reach large, geographically dispersed samples at relatively low cost.	Mixed methods research is a systematic research design in which quantitative and qualitative data are collected and analysed within a single study. Formalised by Creswell and Plano Clark (2003, 3rd ed. 2018), it offers three principal design variants — concurrent, sequential, and transformative — and strengthens findings through triangulation across both data strands.