LESSON 65 - RESEARCH METHODOLOGY || SECTION 3.5: SAMPLE SIZE & SAMPLING TECHNIQUES
Keywords
Summary
175 words
Critical Evaluation
Value of the Information & Strength of the Argument
The video provides a clear, structured overview of sample size determination and sampling techniques, which is valuable for students learning research methodology. The argumentation is logical, following a step-by-step approach: define terms, determine sample size, then select sampling technique. The instructor supports her points with examples and references to previous lessons, but does not provide external citations or empirical evidence. The advice to use online calculators is practical, but the lack of discussion on potential limitations or when to use each method reduces the depth. Overall, the content is informative for beginners but lacks critical analysis.
Scientific Rigor, Source Quality, Title Accuracy
The scientific rigor is moderate: the instructor presents established theories and methods, but does not cite specific sources or studies. The quality of sources is not explicitly addressed; the video relies on the instructor’s expertise and the course materials. The title accurately reflects the content, which is a tutorial on sample size and sampling techniques. No external sources are cited, and the description provides links to the instructor’s website and courses, which are not academic references. The adequacy between title and content is high.
195 words
Title / Content Match
The title accurately reflects the content, which focuses on sample size determination and sampling techniques in research methodology.
Quality & Reliability
7/10
The content is a structured tutorial on research methodology, presenting established concepts and theories. The instructor references prior lessons and provides practical guidance, but lacks explicit citations to external sources or empirical evidence. The information is consistent with standard research methods textbooks.
Key Moments
Markers derived by PSI from the transcript: the creator did not define chapters.
- Introduction to the lesson and channel
- Overview of Section 3.5 and prerequisites
- Definition of sampling, sample, sample size, and sampling frame
- Theories for determining sample size
- Selection of sampling techniques based on research paradigm
- Description of probability and non-probability sampling techniques
- Example of describing sampling procedure in a proposal
- Conclusion and next lesson preview
Cited Sources
- Research Methods Class Website — Mentioned as the main website for accessing the course and book.
- Consultancy Services — Mentioned for booking consultations.
- IBM SPSS Course — Mentioned as a related course.
- Research Methods eBook — Mentioned as a resource for the course.
- YouTube Channel — Mentioned for subscribing to the channel.
Concurring Sources
- Research Methods Knowledge Base — Provides similar information on sampling and sample size.
Contribution & Novelties
The video provides a structured tutorial on sample size and sampling techniques, which is useful for students writing research proposals. It emphasizes the importance of determining sample size before selecting sampling techniques and links these to the research paradigm. The content is not novel but serves as a pedagogical resource.
Pour aller plus loin :
- Sampling (statistics) — Overview of sampling methods and concepts.
- Sample size determination — Detailed explanation of sample size calculation.
- Krejcie and Morgan table — Reference for sample size tables.
- Probability sampling — Explanation of probability sampling techniques.
- Nonprobability sampling — Explanation of non-probability sampling techniques.
100 words
Radar Profile
The radar profile shows moderate scores across all dimensions, with slightly higher scores in quantity and quality of information, indicating a balanced but not exceptional tutorial. The low technical level suggests it is suitable for beginners.